Skip to main content

4 Carat Loose Gemstone

4 Carat Star Ruby Loose Gemstone  Oval 10x8mm
4 Carat Star Ruby Loose Gemstone  Oval 10x8mm

4 Carat Star Ruby Loose Gemstone Oval 10x8mm

$1,005 / item

W 0.32 in L 0.4 in

4 Carat Star Ruby Loose Gemstone Oval 10x8mm

Located in Columbus, OH

NNJ Designs presents a 4.01 carat oval Star Ruby loose gemstone! A Star Ruby is a type of gemstone that displays a six-rayed star when light is shone onto it. Star rubies are unique ...

Category

2010s American Art Deco Loose Gemstones

Materials

Ruby, Star Ruby

Red Spessartite / Mandarin Garnet 4 Carat Pear Cut Natural Loose Gemstone
Red Spessartite / Mandarin Garnet 4 Carat Pear Cut Natural Loose Gemstone

Red Spessartite / Mandarin Garnet 4 Carat Pear Cut Natural Loose Gemstone

$346Sale Price|30% Off

W 0.32 in D 0.24 in L 0.41 in

Red Spessartite / Mandarin Garnet 4 Carat Pear Cut Natural Loose Gemstone

Located in Peshawar, PK

Weighing 4 carats, the gemstone is eye-clean and full of lively sparkle, making it an exceptional choice for a statement ring, elegant pendant, or bespoke fine jewelry design.

Category

21st Century and Contemporary Malagasy Contemporary Loose Gemstones

Materials

Garnet, Mandarin Garnet

6.25 Carat Natural Loose 4 Piece Blue Apatite Lot Cushion Cut Gemstones
6.25 Carat Natural Loose 4 Piece Blue Apatite Lot Cushion Cut Gemstones

6.25 Carat Natural Loose 4 Piece Blue Apatite Lot Cushion Cut Gemstones

Located in Bangkok, TH

Weight 6.25 carat Piece 4 Treatment None Origin African Clarity SI Shape Cut Cushion This 6.25 Carat Natural Loose Blue Apatite Lot features four beautifully matched gemston...

Category

21st Century and Contemporary Modern Loose Gemstones

Materials

Apatite

Natural Red Rhodolite Garnet 4 Carat Cushion Cut Loose Gemstone for Ring
Natural Red Rhodolite Garnet 4 Carat Cushion Cut Loose Gemstone for Ring

Natural Red Rhodolite Garnet 4 Carat Cushion Cut Loose Gemstone for Ring

Located in Peshawar, PK

Natural Red Rhodolite Garnet Cushion Cut Loose Gemstone – Faceted Earth Mined Red Almandine Pyrope Garnet for Statement Ring, Pendant, Custom Fine Jewelry, January Birthstone, Inves...

Category

2010s Tanzanian Contemporary Loose Gemstones

Materials

Garnet, Rhodolite

5.30 Carat Natural Loose 4 Piece Tourmaline Stones Mix Lot Afghan Gemstones
5.30 Carat Natural Loose 4 Piece Tourmaline Stones Mix Lot Afghan Gemstones

5.30 Carat Natural Loose 4 Piece Tourmaline Stones Mix Lot Afghan Gemstones

Located in Bangkok, TH

Weight 5.30 carat Piece 4 Treatment None Origin Afghan Clarity SI Shape Cut Mix This 5.30 Carat Natural Loose 4-Piece Tourmaline Mix Lot features a beautifully curated selectio...

Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

8.35 Carat Natural Loose Green Peridot 4 Piece Pear Shape Pakistani Gemstones
8.35 Carat Natural Loose Green Peridot 4 Piece Pear Shape Pakistani Gemstones

8.35 Carat Natural Loose Green Peridot 4 Piece Pear Shape Pakistani Gemstones

Located in Bangkok, TH

Weight 8.35 carat Piece 4 Treatment None Origin Pakistan Clarity SI Shape Cut Pear This beautiful 8.35 carat natural peridot lot features four matched pear-shaped gemstones,...

Category

21st Century and Contemporary Pakistani Modern Loose Gemstones

Materials

Peridot

Vibrant Green Tourmaline 4 Carat Cushion Cut Natural Loose Gemstones for Jewelry
Vibrant Green Tourmaline 4 Carat Cushion Cut Natural Loose Gemstones for Jewelry

Vibrant Green Tourmaline 4 Carat Cushion Cut Natural Loose Gemstones for Jewelry

$558Sale Price / set|30% Off

W 0.27 in D 0.22 in L 0.31 in

Vibrant Green Tourmaline 4 Carat Cushion Cut Natural Loose Gemstones for Jewelry

Located in Peshawar, PK

Natural Vibrant Minty Green Tourmaline – Cushion Cut Loose Gemstones for Fine Earrings , Pendant & Custom Jewelry 💎 GEMSTONE TYPE: Tourmaline ⚖️ WEIGHT: 4.00 Carat 🪚 SHAPE &am...

Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

Deep Red Natural Rhodolite Garnet 4  Carat Emerald Cut Loose Gemstone for Ring
Deep Red Natural Rhodolite Garnet 4  Carat Emerald Cut Loose Gemstone for Ring

Deep Red Natural Rhodolite Garnet 4 Carat Emerald Cut Loose Gemstone for Ring

Located in Peshawar, PK

Natural Deep Red Rhodolite Garnet Emerald Cut Loose Gemstone – Faceted Earth Mined Red Almandine Pyrope Garnet for Statement Ring, Pendant, Custom Fine Jewelry, January Birthstone, I...

Category

2010s Tanzanian Contemporary Loose Gemstones

Materials

Garnet, Rhodolite

Neon Blue Natural Tourmaline 4 Carat Cushion Cut Loose Gemstone for Ring/Jewelry
Neon Blue Natural Tourmaline 4 Carat Cushion Cut Loose Gemstone for Ring/Jewelry

Neon Blue Natural Tourmaline 4 Carat Cushion Cut Loose Gemstone for Ring/Jewelry

Located in Peshawar, PK

Neon Blue Tourmaline Cushion Cut Loose Gemstone – Rare Earth-Mined Blue Tourmaline Crystal for Pendant, Ring & Custom Jewelry. 💎 GEMSTONE TYPE: Tourmaline ⚖️ WEIGHT: 4.00 Carat...

Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

8.55 Carat Natural Loose 4 Piece Red Garnet Lot Round Cut Tanzania Gemstones
8.55 Carat Natural Loose 4 Piece Red Garnet Lot Round Cut Tanzania Gemstones

8.55 Carat Natural Loose 4 Piece Red Garnet Lot Round Cut Tanzania Gemstones

Located in Bangkok, TH

Weight 8.55 carat Piece 4 Treatment None Origin Africa Clarity VVS Shape Cut Round This 8.55 Carat Natural Loose Garnet Lot features 4 brilliant round-cut gemstones, each r...

Category

21st Century and Contemporary African Modern Loose Gemstones

Materials

Garnet

6.25 Carat Natural Loose 4 Piece Bi Color Tourmaline Emerald Cut Afghan Gemstone
6.25 Carat Natural Loose 4 Piece Bi Color Tourmaline Emerald Cut Afghan Gemstone

6.25 Carat Natural Loose 4 Piece Bi Color Tourmaline Emerald Cut Afghan Gemstone

Located in Bangkok, TH

Weight 6.25 carats Piece 4 Treatment None Origin Afghan Clarity SI Shape Cut Emerald This unique 6.25 carat natural bi-color tourmaline lot features four beautifully matched ...

Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

7.25 Carat Natural Loose 4 Piece Zircons Stones Lot Round Cut African Gemstone
7.25 Carat Natural Loose 4 Piece Zircons Stones Lot Round Cut African Gemstone

7.25 Carat Natural Loose 4 Piece Zircons Stones Lot Round Cut African Gemstone

Located in Bangkok, TH

Weight 7.25 carat Piece 4 Treatment None Origin African Clarity SI Shape Cut Round This 7.25 carat Natural Zircon Lot features four beautifully matched round-cut stones sourc...

Category

21st Century and Contemporary Modern Loose Gemstones

Materials

Zircon

Intense Green Tsavorite Garnet, Faceted Gem, 4, 61 ct., loose Gemstone
Intense Green Tsavorite Garnet, Faceted Gem, 4, 61 ct., loose Gemstone

Intense Green Tsavorite Garnet, Faceted Gem, 4, 61 ct., loose Gemstone

By Günther Weinz

Located in Kirschweiler, DE

We are delighted to be able to offer for sale, this 4,61 ct. Tsavorite Garnet from our exclusive collection. This beautiful rare gem has a rich green green color and a great fire. Cu...

Category

21st Century and Contemporary German Contemporary Loose Gemstones

Materials

Garnet, Tsavorite

Purple Pink Sapphire, No Heat, Certified Gem, 4, 46 Ct., Loose Gemstone
Purple Pink Sapphire, No Heat, Certified Gem, 4, 46 Ct., Loose Gemstone

Purple Pink Sapphire, No Heat, Certified Gem, 4, 46 Ct., Loose Gemstone

By Günther Weinz

Located in Kirschweiler, DE

We are delighted to be able to offer for sale, this 4,46 ct. Purple-Pink Sapphire from our exclusive collection. This beautiful gem has a intense purple-pink color and a great fire. ...

Category

21st Century and Contemporary German Contemporary Loose Gemstones

Materials

Pink Sapphire, Purple Sapphire

Darkish Red Rhodolite Garnet 4 Ct Natural Loose Gemstone Pear Cut for Ring Jewel
Darkish Red Rhodolite Garnet 4 Ct Natural Loose Gemstone Pear Cut for Ring Jewel

Darkish Red Rhodolite Garnet 4 Ct Natural Loose Gemstone Pear Cut for Ring Jewel

Located in Peshawar, PK

Weighing a total of 4 carats, this gemstone displays exceptional clarity and fire, making it ideal for luxurious jewelry piece such as ring, pendant, and bracelet.

Category

21st Century and Contemporary Brazilian Contemporary Loose Gemstones

Materials

Garnet, Rhodolite

Natural Green Emerald Lot 1.96 Ct (4 PCs) Loose Gemstones Jewelry Size from Swat
Natural Green Emerald Lot 1.96 Ct (4 PCs) Loose Gemstones Jewelry Size from Swat

Natural Green Emerald Lot 1.96 Ct (4 PCs) Loose Gemstones Jewelry Size from Swat

Located in Peshawar, PK

Deep Rich Green Natural Emerald Jewelry Size Loose Gemstones Lot for Rings, Earrings, Necklace Pendants, Bracelets or any other Jewelry Setting Emerald cut from Swat Pakistan!!

Category

21st Century and Contemporary Pakistani Contemporary Loose Gemstones

Materials

Emerald

4 Carat Natural Loose Amethyst Pixel Cut Gem For Jewellery Making
4 Carat Natural Loose Amethyst Pixel Cut Gem For Jewellery Making

4 Carat Natural Loose Amethyst Pixel Cut Gem For Jewellery Making

Located in Peshawar, PK

Loose Amethyst Weight: 4.00 Carats Dimension: 14.7 x 7.2 x 5.5 Mm Colour: Purple Origin: Brazil Treatment: Non Certificate: On Demand Shape: Emerald Amethyst, a stunning variety of...

Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Amethyst

1.19 carats 4 Piece Aquamarine Set Baguette Cut Natural African Gemstones
1.19 carats 4 Piece Aquamarine Set Baguette Cut Natural African Gemstones

1.19 carats 4 Piece Aquamarine Set Baguette Cut Natural African Gemstones

$120Sale Price|20% Off

W 0.16 in D 0.11 in L 0.16 in

1.19 carats 4 Piece Aquamarine Set Baguette Cut Natural African Gemstones

Located in Bangkok, TH

Weight 1.19 carats Dimensions 4.0x4.0x2.7 mm Treatment none Origin Africa Clarity VVS Shape square Cut baguette This elegant set features four natural Aquamarine gemstones wi...

Category

21st Century and Contemporary African Modern Loose Gemstones

Materials

Aquamarine

92.86 Carats Top Quality Rubellite Tourmaline Cabochon 4 Pieces Natural Gemstone
92.86 Carats Top Quality Rubellite Tourmaline Cabochon 4 Pieces Natural Gemstone

92.86 Carats Top Quality Rubellite Tourmaline Cabochon 4 Pieces Natural Gemstone

Located in Jaipur, RJ

Gemstone - Rubellite Tourmaline Weight - 92.86 Ct Size - 10x12.5 To 18x23 MM Piece - 4 Shape - Cabochon

Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Rubelite, Tourmaline

GIA Certified 4 Carat, D Color, VS2 Clarity, Round Brilliant Cut Loose Diamond
GIA Certified 4 Carat, D Color, VS2 Clarity, Round Brilliant Cut Loose Diamond

GIA Certified 4 Carat, D Color, VS2 Clarity, Round Brilliant Cut Loose Diamond

Located in Miami, FL

GIA Certified 4.00 Carat, D Color, VS2 Clarity, Round Brilliant Cut Loose Natural Diamond. Untreated. Certificate: GIA Report #5141637401. Item Details: - Item Type: Loose Diamond ...

Category

21st Century and Contemporary Loose Gemstones

Materials

Diamond, White Diamond

28.71 carats aquamarine petal carving 4 pieces set for jewelry natural gemstone
28.71 carats aquamarine petal carving 4 pieces set for jewelry natural gemstone

28.71 carats aquamarine petal carving 4 pieces set for jewelry natural gemstone

Located in Jaipur, RJ

28.71 carats aquamarine petal carving 4 pieces set for jewelry natural gemstone Gemstone - Aquamarine Weight: 28.71 Carats Size:12x20 to 15x10 MM Pieces: 4

Category

21st Century and Contemporary Unknown Art Deco Loose Gemstones

Materials

Aquamarine

5.75 Carat 4 Piece Greenish Blue Tourmaline Set Gemstone for Jewelry and Rings
5.75 Carat 4 Piece Greenish Blue Tourmaline Set Gemstone for Jewelry and Rings

5.75 Carat 4 Piece Greenish Blue Tourmaline Set Gemstone for Jewelry and Rings

Located in Bangkok, TH

Product Information: GEMSTONE TYPE: Greenish Blue Tourmaline Set WEIGHT: 5.75 carats WEIGHT RANGE: 2.15, 1.85, 1.55 and 0.70 carats CLARITY: Eye clean to SI ORIGIN: Afghanistan TREAT...

Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

2 3/4 Carat Cushion Bluish Violet Sapphire GIA
2 3/4 Carat Cushion Bluish Violet Sapphire GIA

2 3/4 Carat Cushion Bluish Violet Sapphire GIA

Located in San Francisco, CA

This Cushion shape 2.74-carat Natural Bluish Violet color sapphire GIA certified has been hand-selected by our experts for its top luster and unique color

Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Sapphire

2 1/4 Carat Cushion Blue Sapphire GIA Unheated
2 1/4 Carat Cushion Blue Sapphire GIA Unheated

2 1/4 Carat Cushion Blue Sapphire GIA Unheated

Located in San Francisco, CA

This Cushion shape 2.23-carat Natural Blue color sapphire GIA certified has been hand-selected by our experts for its top luster and unique color

Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Blue Sapphire

1.95 carats 4 Piece Pink Spinel Gems Lot Mix Cut from Tajikistan
1.95 carats 4 Piece Pink Spinel Gems Lot Mix Cut from Tajikistan

1.95 carats 4 Piece Pink Spinel Gems Lot Mix Cut from Tajikistan

Located in Bangkok, TH

Weight 1.95 carats No of pieces 04 Treatment none Origin Tajikistan Clarity SI-I Cut Mix This exquisite lot features four dazzling pink spinel gemstones, totaling 1.95 carats,...

Category

21st Century and Contemporary Tajikistani Modern Loose Gemstones

Materials

Spinel

2 3/4 Carat Oval Light Grayish Blue Sapphire GIA Unheated
2 3/4 Carat Oval Light Grayish Blue Sapphire GIA Unheated

2 3/4 Carat Oval Light Grayish Blue Sapphire GIA Unheated

Located in San Francisco, CA

This Oval shape 2.73-carat Natural Light Grayish Blue color sapphire GIA certified has been hand-selected by our experts for its top luster and unique color

Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Blue Sapphire

1 1/4 Carat Oval Light Grayish Blue Sapphire GIA Unheated
1 1/4 Carat Oval Light Grayish Blue Sapphire GIA Unheated

1 1/4 Carat Oval Light Grayish Blue Sapphire GIA Unheated

Located in San Francisco, CA

This Oval shape 1.24-carat Natural Light Grayish Blue color sapphire GIA certified has been hand-selected by our experts for its top luster and unique color

Category

21st Century and Contemporary American Loose Gemstones

Materials

Blue Sapphire

1.78 carats 4 Piece Deep Pink Spinel Gems Lot Mix Cut from Burma
1.78 carats 4 Piece Deep Pink Spinel Gems Lot Mix Cut from Burma

1.78 carats 4 Piece Deep Pink Spinel Gems Lot Mix Cut from Burma

Located in Bangkok, TH

Weight 1.78 carats No of Pieces 04 Treatment none Origin Burma Clarity VVS This exquisite 1.78 carat lot comprises six radiant pink spinel gemstones, each showcasing a meticulo...

Category

21st Century and Contemporary Burmese Modern Loose Gemstones

Materials

Spinel

6×4 Octagon Sapphire
6×4 Octagon Sapphire

6×4 Octagon Sapphire

$300

H 0.11 in W 0.16 in L 0.25 in

6×4 Octagon Sapphire

Located in Khet Bang Rak, 10

A 6×4 mm octagon sapphire—often referred to as an emerald-cut sapphire—is a refined and versatile gemstone choice, especially suited for elegant, structured jewelry designs. This sh...

Category

21st Century and Contemporary Thai Modern Loose Gemstones

Materials

Blue Sapphire

GIA Certified 4 Carats D Color VVS1 Clarity Round Brilliant Diamond Solitaire
GIA Certified 4 Carats D Color VVS1 Clarity Round Brilliant Diamond Solitaire

GIA Certified 4 Carats D Color VVS1 Clarity Round Brilliant Diamond Solitaire

By Rich Jewels

Located in Scottsdale, AZ

This exceptional GIA Certified 4.00 carat Round Brilliant Cut diamond is graded D color and VVS1 clarity, representing the highest standards of colorless purity and remarkable brilli...

Category

21st Century and Contemporary Modern Loose Gemstones

Materials

Diamond

GIA Certified 4 Carats G Color VVS2 Clarity Heart Shape Solitaire Diamond XX-N
GIA Certified 4 Carats G Color VVS2 Clarity Heart Shape Solitaire Diamond XX-N

GIA Certified 4 Carats G Color VVS2 Clarity Heart Shape Solitaire Diamond XX-N

By Rich Jewels

Located in Scottsdale, AZ

This exceptional GIA Certified 4.00 carat Heart Shape diamond is graded G color and VVS2 clarity, offering remarkable brilliance, transparency, and romantic appeal. The heart shape i...

Category

21st Century and Contemporary Modern Loose Gemstones

Materials

Diamond

3 3/4 Radiant Orange-Yellow Sapphire GIA
3 3/4 Radiant Orange-Yellow Sapphire GIA

3 3/4 Radiant Orange-Yellow Sapphire GIA

Located in San Francisco, CA

This Radiant shape 3.76-carat Natural Orange-Yellow color sapphire GIA certified has been hand-selected by our experts for its top luster and unique color

Category

21st Century and Contemporary Loose Gemstones

Materials

Yellow Sapphire

4 CTs, Faceted Oval Morganite set, faceted pink beryl oval
4 CTs, Faceted Oval Morganite set, faceted pink beryl oval

4 CTs, Faceted Oval Morganite set, faceted pink beryl oval

By True Gems

Located in บางรัก, TH

Faceted morganite set, pink beryl set sku15 Weight: 4 CTs Color: pink Nice gem set can be turned into earrings and ring

Category

21st Century and Contemporary Russian Arts and Crafts Loose Gemstones

Materials

Morganite

Recent Sales

4 Carat Natural Bi Color Tourmaline Loose stone in Green and White
4 Carat Natural Bi Color Tourmaline Loose stone in Green and White

4 Carat Natural Bi Color Tourmaline Loose stone in Green and White

Located in London, GB

4 Carat Natural Bi Color Tourmaline Loose stone in Green and White GRS/GCS/GIA appointed lab certificate can be arranged upon request To design your own jewellery, Xuelai Jeweller...

Category

2010s Loose Gemstones

Materials

Tourmaline

4, 03 Carat Natural Purple Sri Lankan Sapphire
4, 03 Carat Natural Purple Sri Lankan Sapphire

4, 03 Carat Natural Purple Sri Lankan Sapphire

By D and A Style

Located in Singapore, SG

When you hear the word "sapphire" you definitely imagine intense blue color. But what to do if you like purple sapphires either? This stone is the best option for those who like pu...

Category

21st Century and Contemporary Armenian Modern Loose Gemstones

Materials

Sapphire, Star Sapphire, Purple Sapphire

GIA Certified Diamond 1.00 Carat F/VVS1 Solitaire Ring in 4 Prong Setting
GIA Certified Diamond 1.00 Carat F/VVS1 Solitaire Ring in 4 Prong Setting

GIA Certified Diamond 1.00 Carat F/VVS1 Solitaire Ring in 4 Prong Setting

Located in Darmstadt, DE

GIA Certified Diamond 1.00 Carat F/VVS1 Solitaire Ring in 4 Prong Setting. High Gloss Finish. Fine Solitaire Ring in 18k White Gold. Any Ring Size possible. Bigger Diamond Sizes...

Category

2010s German Modern Loose Gemstones

Materials

Diamond, Gold, 18k Gold

GIA Certified Diamond 0.70 Carat F/VVS1 Solitaire Ring in 4 Prong Setting
GIA Certified Diamond 0.70 Carat F/VVS1 Solitaire Ring in 4 Prong Setting

GIA Certified Diamond 0.70 Carat F/VVS1 Solitaire Ring in 4 Prong Setting

Located in Darmstadt, DE

GIA Certified Diamond 0.70 Carat F/VVS1 Solitaire Ring in 4 Prong Setting. High Gloss Finish. Fine Solitaire Ring in 18k White Gold. Any Ring Size possible. Bigger Diamond Sizes...

Category

2010s German Modern Loose Gemstones

Materials

Diamond, Gold, 18k Gold

GIA Certified Natural Black Diamond 4 Carat Ring in 18K Black Gold Round Cut
GIA Certified Natural Black Diamond 4 Carat Ring in 18K Black Gold Round Cut

GIA Certified Natural Black Diamond 4 Carat Ring in 18K Black Gold Round Cut

Located in Darmstadt, DE

GIA Certified Natural Black Diamond 4 Carat Ring in 18K Black Gold Round Cut Black is Beautiful. Black is Powerful. We are very excited to introduce our brand new BLACK STARS collec...

Category

2010s German Modern Loose Gemstones

Materials

Diamond, Gold, 18k Gold

GIA Certified Natural Black Diamond Studs in 18K Black Gold, 4 Carat Emerald Cut
GIA Certified Natural Black Diamond Studs in 18K Black Gold, 4 Carat Emerald Cut

GIA Certified Natural Black Diamond Studs in 18K Black Gold, 4 Carat Emerald Cut

Located in Darmstadt, DE

GIA Certified Natural Black Diamond Studs in 18K Black Gold, 4 Carat Emerald Cut Black is Beautiful. Black is Powerful. We are very excited to introduce our brand new BLACK STARS co...

Category

2010s German Modern Loose Gemstones

Materials

Black Diamond, Gold, 18k Gold

GIA Certified Natural Black Diamond 4 Carat Ring in 18K Black Gold Emerald Cut
GIA Certified Natural Black Diamond 4 Carat Ring in 18K Black Gold Emerald Cut

GIA Certified Natural Black Diamond 4 Carat Ring in 18K Black Gold Emerald Cut

Located in Darmstadt, DE

GIA Certified Natural Black Diamond 4 Carat Ring in 18K Black Gold Emerald Cut Black is Beautiful. Black is Powerful. We are very excited to introduce our brand new BLACK STARS coll...

Category

2010s German Modern Loose Gemstones

Materials

Diamond, Black Diamond, Gold, 18k Gold

GIA Certified Natural Black Diamond Studs in 18K Black Gold 4 Carat Round Cut
GIA Certified Natural Black Diamond Studs in 18K Black Gold 4 Carat Round Cut

GIA Certified Natural Black Diamond Studs in 18K Black Gold 4 Carat Round Cut

Located in Darmstadt, DE

GIA Certified Natural Black Diamond Studs in 18K Black Gold 4 Carat Round Cut Black is Beautiful. Black is Powerful. We are very excited to introduce our brand new BLACK STARS colle...

Category

2010s German Modern Loose Gemstones

Materials

Black Diamond, Gold, 18k Gold

Natural Columbian Emerald 4 pcs with GIT certification
Natural Columbian Emerald 4 pcs with GIT certification

Natural Columbian Emerald 4 pcs with GIT certification

Unavailable

W 0.15 in D 0.11 in L 0.13 in

Natural Columbian Emerald 4 pcs with GIT certification

Located in 渋谷区, JP

Natural Columbian Emerald 4 pcs with GIT certification #1 Measurement: 3.67 x 3.26 x 2.58 mm Weight: 0.18 ct Shape: Octagonal Cut: Step Color Green #2 Measurement: 4.96 x 3.51x 2.5...

Category

2010s Colombian Loose Gemstones

Materials

Emerald

4.48ct 4 Stone Set Almandine/Almandite Round Bullet Red Rhodolite Garnet from Mo
4.48ct 4 Stone Set Almandine/Almandite Round Bullet Red Rhodolite Garnet from Mo

4.48ct 4 Stone Set Almandine/Almandite Round Bullet Red Rhodolite Garnet from Mo

Located in Toronto, Ontario

Description: Gem Type: Rhodolite Garnet Number of Stones: 4 Weight: 4.48 cts Measurements: 5.00 x 5.00 x 5.00 mm Shape: Round Bullet Cutting Style Crown: Bullet Cutting Style Pavili...

Category

2010s Mozambican Loose Gemstones

Materials

Rhodolite

Parallelogram Cut Diamond 0.60 G/IF Solitaire Ring 750 Gold in 4 Prong Setting
Parallelogram Cut Diamond 0.60 G/IF Solitaire Ring 750 Gold in 4 Prong Setting

Parallelogram Cut Diamond 0.60 G/IF Solitaire Ring 750 Gold in 4 Prong Setting

Located in Darmstadt, DE

Parallelogram Cut Diamond 0.60 G/IF Solitaire Ring 750 Gold in 4 Prong Setting Fine Fancy Cut, Solitaire Diamond Ring in 18k Whitegold. Four Prong Setting. High Mounted Diamond. Si...

Category

2010s German Modern Loose Gemstones

Materials

Diamond, Gold, 18k Gold

GIA Certified Diamond 0.50 I/VS2 Solitaire Ring 750 Gold in 4 Prong Setting
GIA Certified Diamond 0.50 I/VS2 Solitaire Ring 750 Gold in 4 Prong Setting

GIA Certified Diamond 0.50 I/VS2 Solitaire Ring 750 Gold in 4 Prong Setting

Located in Darmstadt, DE

GIA Certified Diamond 0.50 I/VS2 Solitaire Ring 750 Gold in 4 Prong Setting Fine Brilliant Cut, Solitaire Diamond Ring in 18k Whitegold. Four Prong Setting. High Mounted Diamond. S...

Category

2010s German Modern Loose Gemstones

Materials

Diamond, Gold, 18k Gold

Deep Blue Sapphire, Certified Gem, 4, 27 Ct., Loose Gemstone
Deep Blue Sapphire, Certified Gem, 4, 27 Ct., Loose Gemstone

Deep Blue Sapphire, Certified Gem, 4, 27 Ct., Loose Gemstone

By Günther Weinz

Located in Kirschweiler, DE

We are delighted to be able to offer for sale, this 4,27 ct. blue Sapphire from our exclusive collection. This beautiful gem has a rich blue color and a great fire. Cutting, proporti...

Category

21st Century and Contemporary German Contemporary Loose Gemstones

Materials

Blue Sapphire

2.65 Carats Multi Color Sapphire Stones 4 Piece Lot from Sri Lanka
2.65 Carats Multi Color Sapphire Stones 4 Piece Lot from Sri Lanka

2.65 Carats Multi Color Sapphire Stones 4 Piece Lot from Sri Lanka

Located in Bangkok, TH

Weight 2.65 carats No of Pcs 04 Treatment heated Origin Sri Lanka Clarity VVS This stunning 2.65 carat lot features four exquisite multi color Sapphire stones, sourced from th...

Category

21st Century and Contemporary Sri Lankan Modern Loose Gemstones

Materials

Sapphire

High Quality 26.05 Carats Pink Kunzite 4 Piece Cut stone For jewelry Natural Gem
High Quality 26.05 Carats Pink Kunzite 4 Piece Cut stone For jewelry Natural Gem

High Quality 26.05 Carats Pink Kunzite 4 Piece Cut stone For jewelry Natural Gem

Located in Jaipur, RJ

High Quality 26.05 Carats Pink Kunzite 4 Piece Cut stone For jewelry Natural Gem Gemstone - Kunzite Weight - 26.05 carats Shape - Mix Cut stone Size -12x8x7.5 to 8.3x8.3x8 mm Quanti...

Category

21st Century and Contemporary Unknown Art Deco Loose Gemstones

Materials

Kunzite

GIA Certified 4 Carat Flawless E Color Diamond Ideal Cut
GIA Certified 4 Carat Flawless E Color Diamond Ideal Cut

GIA Certified 4 Carat Flawless E Color Diamond Ideal Cut

By Antinori Fine Jewels

Located in Chicago, IL

An exquisite GIA Certified 4 Carat Oval Diamond Excellent Symmetry, Excellent Polish None Fluorescence No bow tie!

Category

2010s Italian Modern Loose Gemstones

Materials

Diamond, White Diamond

People Also Browsed

5.46-Carat Pastel Mint Green Tourmaline Oval Rare Loose Gemstone - Merkaba
5.46-Carat Pastel Mint Green Tourmaline Oval Rare Loose Gemstone - Merkaba

5.46-Carat Pastel Mint Green Tourmaline Oval Rare Loose Gemstone - Merkaba

By Merkaba

Located in Beverly Hills, CA

Ultra-exclusive 5.46-carat pastel mint green tourmaline gemstone in a classic oval cut. A luminous, investment-grade treasure for fine jewelry collectors. Introducing a masterpiece ...

Category

21st Century and Contemporary Unknown Modern Loose Gemstones

Materials

Tourmaline, 18k Gold, Rose Gold, White Gold, Yellow Gold, Platinum

GIA-Certified Diamond & Mother of Pearl Pendant, Georgian
GIA-Certified Diamond & Mother of Pearl Pendant, Georgian

GIA-Certified Diamond & Mother of Pearl Pendant, Georgian

Located in Northampton, MA

Dating from around the 1830s, this magnificent Georgian pendant features a silver-over-gold "bow" set with 13 beautiful old rose-cut diamonds that total at least 1 carat. From this s...

Category

Antique 1820s Unknown Georgian Pendant Necklaces

Materials

Diamond, Pearl, Silver

Victorian Opal and Diamond Crown Tiara Haircomb Necklace, circa 1880s
Victorian Opal and Diamond Crown Tiara Haircomb Necklace, circa 1880s

Victorian Opal and Diamond Crown Tiara Haircomb Necklace, circa 1880s

Located in Idar-Oberstein, DE

Victorian Opal and Diamond Crown Haircomb Necklace, ca. 1880s A very unusual and stunning Victorian crown, set with fiery opal cabochons and old-mine cut diamonds, from the 1880s. T...

Category

Antique 19th Century Unknown Victorian Choker Necklaces

Materials

Diamond, Opal, Gold, Silver

Vintage Sapphire and Diamond Convertible Tiara Necklace
Vintage Sapphire and Diamond Convertible Tiara Necklace

Vintage Sapphire and Diamond Convertible Tiara Necklace

Located in London, GB

A vintage sapphire and diamond convertible tiara necklace. An exceptional vintage sapphire and diamond convertible tiara and necklace set, in platinum, circa 1950. This beautifull...

Category

Vintage 1960s French Retro Drop Necklaces

Materials

Diamond, Sapphire, Platinum

Bulgari Twin Ring 5.79ct Emerald and 7.25ct Diamond 18k Gold and Platinum
Bulgari Twin Ring 5.79ct Emerald and 7.25ct Diamond 18k Gold and Platinum

Bulgari Twin Ring 5.79ct Emerald and 7.25ct Diamond 18k Gold and Platinum

By Bulgari

Located in New York, NY

This chic BULGARI cocktail ring features an exceptional 5.79 carat AGL certified Colombian emerald and a GIA certified 7.25 carat square emerlad-cut diamond of E color and VS1 clarit...

Category

Late 20th Century Cocktail Rings

Materials

Diamond, Emerald, 18k Gold, Platinum

Pigeon's Blood Burmese Ruby and Diamond Necklace/Tiara, circa 1915
Pigeon's Blood Burmese Ruby and Diamond Necklace/Tiara, circa 1915

Pigeon's Blood Burmese Ruby and Diamond Necklace/Tiara, circa 1915

Located in London, GB

Pigeon's blood Burmese ruby and diamond necklace/tiara. Set to the centre with twenty six oval old cut natural unenhanced Pigeon's blood Burmese rubies in open back claw settings, ra...

Category

Vintage 1910s Unknown Drop Necklaces

Materials

Diamond, Ruby, Rose Gold, Platinum

Ruby and diamonds 14k gold ring.
Ruby and diamonds 14k gold ring.

Ruby and diamonds 14k gold ring.

$964Sale Price / item|44% Off

Ruby and diamonds 14k gold ring.

By Daizy Jewellery

Located in Istanbul, TR

Ruby and diamonds 14k gold ring. Oval Ruby gold ring. Ruby diamond halo ring. Red gemstone ring. July birthstone ring. Metal: 14k gold Weight: 3 gr depends from size Gemstones: Rub...

Category

2010s Turkish Modern Engagement Rings

Materials

Diamond, Ruby, 14k Gold

Antique Victorian Tiara with Diamond Star - c.1890
Antique Victorian Tiara with Diamond Star - c.1890

Antique Victorian Tiara with Diamond Star - c.1890

Located in London, GB

We are exceptionally delighted to offer this spectacular Victorian diamond star tiara made c.1890. The tiara will come in a fully fitted presentation case as photographed. Upon pond...

Category

Antique 1890s Victorian Brooches

Materials

Diamond, Gold

Late Victorian Opal and Diamond Tiara
Late Victorian Opal and Diamond Tiara

Late Victorian Opal and Diamond Tiara

$53,234

W 1.58 in L 5.71 in

Late Victorian Opal and Diamond Tiara

Located in London, GB

A late Victorian opal and diamond tiara/necklace, consisting of seven knife-edge gold bars graduating from the centre, each set with two round cabochon-cut opals and an old-cut diamo...

Category

Antique 1890s European Victorian Drop Necklaces

Materials

Diamond, Opal, 18k Gold, Silver

Vintage 60 Carat Diamond Floral Necklace Platinum
Vintage 60 Carat Diamond Floral Necklace Platinum

Vintage 60 Carat Diamond Floral Necklace Platinum

Located in BEVERLY HILLS, CA

Important exquisite grand diamond floral necklace platinum, high jewelry circa 1950's. 354 total diamonds, approximately 60 carats total. 146 round diamonds approximately F/G color ...

Category

Vintage 1950s Unknown Edwardian Drop Necklaces

Materials

Diamond, Platinum

IGI 14K 4.63 Ct Emerald&Pink Diamonds Antique Art Deco Style Engagement Ring
IGI 14K 4.63 Ct Emerald&Pink Diamonds Antique Art Deco Style Engagement Ring

IGI 14K 4.63 Ct Emerald&Pink Diamonds Antique Art Deco Style Engagement Ring

Located in Kaohsiung City, TW

*IGI 14K 4.63 Ct Emerald&Pink Diamonds Antique Art Deco Style Engagement Ring* A natural Zambia green emerald weighing 4.63 ct is set on a 14K white gold arc deco design band with n...

Category

21st Century and Contemporary Taiwanese Contemporary Engagement Rings

Materials

Diamond, Pink Diamond, Emerald, Gold, 14k Gold, White Gold

Natural Alexandrite Pair Green to Orange pink 0.67 Ct  eye clean quality
Natural Alexandrite Pair Green to Orange pink 0.67 Ct  eye clean quality

Natural Alexandrite Pair Green to Orange pink 0.67 Ct eye clean quality

Located in bangkok, TH

AXC12 Natural Alexandrite Pair Green to orange pink eye clean quality Name Stone : Alexandrite Weight : 0.67ct pair Color: green color ( change to orange pink ) Clarity: nearly eye...

Category

2010s Loose Gemstones

Materials

Alexandrite

Boucheron Diamond Platinum Necklace And Brooch
Boucheron Diamond Platinum Necklace And Brooch

Boucheron Diamond Platinum Necklace And Brooch

By Boucheron

Located in New York, NY

A truly magnificent 1950's Boucheron diamond necklace. Designed as a stylised, flexible ribbon set with graduated and tapered baguette & step-cut diamonds, suspending an articulated ...

Category

Vintage 1960s French Drop Necklaces

Materials

White Diamond, Platinum

Important Old Mine Cut Heart Locket Pendant and Diamond Necklace, Certified
Important Old Mine Cut Heart Locket Pendant and Diamond Necklace, Certified

Important Old Mine Cut Heart Locket Pendant and Diamond Necklace, Certified

Located in Hong Kong, HK

A piece of history. This very important necklace we bought from a major auction house over 10 years ago. We sold the original old mine cut necklace. The buyer was only interested in ...

Category

Antique 1850s Hong Kong Pendant Necklaces

Materials

Diamond, White Diamond, Gold, 18k Gold, Rose Gold

Van Necklace & Earrings Suite (220.66 ct Colombian Emeralds & Diamonds) in 18K
Van Necklace & Earrings Suite (220.66 ct Colombian Emeralds & Diamonds) in 18K

Van Necklace & Earrings Suite (220.66 ct Colombian Emeralds & Diamonds) in 18K

By Beauvince Jewelry

Located in New York, NY

The Van Necklace & Earrings Suite is a ethereal depiction of nature. It is named after the Sanskrit word for forest - Van (pronounced akin to 'one'). The fine Colombian Emeralds juxt...

Category

Early 2000s Contemporary Choker Necklaces

Materials

Diamond, White Diamond, Emerald, Gold, 18k Gold, White Gold

Natural Color Change Alexandrite Gemstone 3.05 carats with GIA Report
Natural Color Change Alexandrite Gemstone 3.05 carats with GIA Report

Natural Color Change Alexandrite Gemstone 3.05 carats with GIA Report

Located in Los Angeles, CA

Discover the magical world of Alexandrite. It speaks for itself with its captivating green and blue colors and characteristics that put it in a class apart from other gemstones. Dazz...

Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Alexandrite

Get Updated with New Arrivals
Save "4 Carat Loose Gemstone", and we’ll notify you when there are new listings in this category.

4 Carat Loose Gemstone For Sale on 1stDibs

Find the exact 4 carat loose gemstone you’re shopping for in the variety available on 1stDibs. Every item for sale was constructed with extraordinary care, often using 18k Gold, Gold and Platinum. Our collection of these items for sale includes 9 vintage editions and 302 modern creations to choose from as well. If you’re looking for a 4 carat loose gemstone from a specific time period, our collection is diverse and broad-ranging, and you’ll find at least one that dates back to the 18th Century while another version may have been produced as recently as the 21st Century. A 4 carat loose gemstone from Merkaba, Sarosi By Timeless Gems and Tamir — each of whom created a beautiful version of this treasured accessory — is worth considering. A 4 carat loose gemstone can make for a versatile accessory, but a selection from our variety of 86 Tourmaline versions can add an especially stylish touch. Today, if you’re looking for an oval cut version of this piece and are unable to find the perfect match, our selection also includes cushion cut and emerald cut alternatives. If you’re browsing our inventory for a 4 carat loose gemstone, you’ll find that many are available today for women, but there are still pieces to choose from for unisex and men.

How Much is a 4 Carat Loose Gemstone?

Prices for a 4 carat loose gemstone can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $65 and can go as high as $325,000, while this accessory, on average, fetches $5,940.

Finding the Right Loose-gemstones for You

Are you shopping for diamonds and other loose gemstones to create your own custom jewelry? 

Why might you purchase a diamond or gemstone “loose” — that is, on its own, not mounted in a piece of jewelry? Perhaps you’re a connoisseur looking to acquire a unique investment. The scarcity of high-quality colored diamonds, for instance, especially pink diamonds, means that their value increases over time; the same is true of rare Kashmir sapphires and Burmese rubies. Far rarer than diamonds, Paraiba tourmaline, discovered only in the 1980s, is treasured as much for its extraordinary color as its scarcity, both of which contribute to its high value.

A more common scenario would be that you’re hoping to create a very special piece of custom jewelry, such as an engagement ring or a milestone-birthday present, and want to personally select the most beautiful, unusual, or ultra-rare stone you can find and afford. Doing so adds to the romance and substance of the gift and can be a part of the story told as the jewel is passed from generation to generation.

If this sounds like you, read on for tips on becoming one of the world’s savviest gem hunters.

Educate yourself: When buying any piece of gem-set fine jewelry, you should familiarize yourself with the factors that determine a stone’s price. This will enable you to streamline your search for the perfect gem and have intelligent, productive conversations with sellers.

There is a wealth of information online, such as our diamond-buying guide and this overview of colored gemstones for engagement rings. The buying guides of the Gemological Institute of America (GIA), searchable by stone type, are also a widely trusted source for consumers venturing into the world of diamonds and gems for the first time.

Vet your vendor: If you peruse 1stDibs with any regularity, you know there is no shortage of vendors who deal in top-quality loose gemstones. (Read about our vetted sellers.) Finding a trustworthy, established dealer may be as easy as getting a recommendation from friends or family. And, although it may sound obvious, it pays to Google your candidates — and consult customer reviews — before making contact.

Harakh Mehta, designer and founder of the Mumbai, India–based fine-jewelry brand Harakh, has an innate understanding of proper client relations, especially when the customer is in unfamiliar territory. “Start chatting with the dealer, get to know them better," he says. "It’s very important to establish a comfort level. We never push a sale, as we want it to be a carefully considered purchase. So, if the client is not in a rush, we do it over a few virtual meetings or phone calls.”

Request documentation: The best dealers go to great lengths to furnish clients with documents verifying the quality rating, natural origin and provenance of a stone — showing, for example, that loose emerald hails from the famous Muzo mine in Colombia — and disclosing any treatments applied to enhance its appearance. (And who doesn't love emerald jewelry? The most valuable emeralds are the ones that have a deep bluish-green to true green color and no visible inclusions.)

If no grading report is available for a stone you are interested in, the dealer should be able to provide an authenticity document, such as an appraisal or info sheet, that has been signed by an in-house gemologist or professional appraiser. Google those names, too, for extra peace of mind.

Ask for videos and visuals: When transacting with a gem dealer online, you should always request real-time videos and photographs, since professional photos of a stone, usually on a white background, have likely been retouched for optimal presentation.

Read more about how to buy loose gemstones and find your dream gems today on 1stDibs.