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20th Century Loose Gemstones

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Period: 20th Century
Red Andesine Labradorite 9.14 Carat
Located in Endwell, NY
This Red Andesine Labradorite comes from the estate of a private collector. It's emerald cut measuring 16x12mm with a 7.4mm depth and weighs 9.14 carats. ...
Category

20th Century Loose Gemstones

Materials

Labradorite

10.60 Carat Natural Loose Citrine Asscher Cut Ring Gemstone From Brazil Mine
Located in Peshawar, PK
Faceted Citrine Weight : 10.60 Carats Dimensions : 13x12.8x10.1 Mm Clarity : Clean Origin : Brazil Color: Brown Yellow Shape: Asscher Certificate: On Demand Month: November . The Man...
Category

Brazilian Arts and Crafts 20th Century Loose Gemstones

Materials

Citrine

Hakimoto By Jewel Of Ocean Pair of 18 mm White Round Australian South Sea Pearl
Located in New York, NY
Hakimoto By Jewel Of Ocean Round South Sea Pearl Pair of 18 mm White 16.7 Grams Australian South Sea Pearl Aproximate
Category

American Modern 20th Century Loose Gemstones

Materials

South Sea Pearl

Hakimoto by Jewel Of Ocean Pair of 17 mmWhite Round Australian South Sea Pearl
Located in New York, NY
Hakimoto By Jewel Of Ocean Round South Sea Pearl Pair of 16.9-17 mm White 14 Grams Australian South Sea Pearl Aproximat
Category

American Modern 20th Century Loose Gemstones

Materials

Cultured Pearl, South Sea Pearl

Hakimoto by Jewel of Ocean Pair of 17.5mm White Round Australian South Sea Pearl
Located in New York, NY
Hakimoto By Jewel Of Ocean Round South Sea Pearl Pair of 17.5 mm White 16.7 Grams Australian South Sea Pearl Aproximate
Category

American Modern 20th Century Loose Gemstones

Materials

Cultured Pearl, South Sea Pearl

49.5 Carat Ametrine Emerald Cut - Extra Large Loose Single Stone
Located in Endwell, NY
This EXTRA LARGE emerald cut (rectangular step cut) ametrine exhibits its distinctive bi-colorism with rich purple (amethyst) blending into a sunsh...
Category

20th Century Loose Gemstones

Materials

Amethyst, Citrine

GIA Certified 10.08 Old Mine Rectangular Brilliant W-X, SI2 Natural Diamond
Located in New York, NY
ITEM DESCRIPTION ID #: NYC57282 Stone Shape: Modified Rectangular Brilliant Diamond Weight: 10.08 carat Clarity: SI2 Color: W to X Range Cut: Excellent Measurements: 13.90 x 11.42 x...
Category

20th Century Loose Gemstones

Materials

Diamond

LFG Certified 3.78 K/VS1 Antique Old European Round Brilliant Cut Diamond
Located in Paris, FR
This Antique Old European Round Brilliant cut Diamond weights 3.78 carats with a K color (Beautiful white face up) and VS1 Clarity (Loupe Clean). The high quality of its cut let the ...
Category

Unknown Belle Époque Vintage 20th Century Loose Gemstones

Materials

Diamond

Natural 7.60 Carat Loose Dark Purple Amethyst Trilliant Shape from Brazil
Located in Peshawar, PK
Gemstone Type : Amethyst Weight : 7.60 Carats Dimensions : 14x13.4x8.9 mm Clarity : Eye Clean Origin : Brazil Color: Purple Shape:Trillion Certificate: On Demand Month: February Purp...
Category

Brazilian Arts and Crafts 20th Century Loose Gemstones

Materials

Amethyst

GIA Certified No Heat Natural Sapphire Origin Sri Lanka Weighing 2.80 Carat
Located in New York, NY
GIA certified no indication of heat, oval Sri Lanka sapphire weighing 2.80 carats GIA REPORT 2225687488 Cutting Style: Crown Modified Brilliant Cut Cutting Style: Pavilion Step Cut Transparency Transparent Color Blue Species Natural Corundum Variety Natural Sapphire Geographic Origin Sri Lanka TREATMENT No Indications of Heating Item Description: One loose stone Weight: 2.80 carats Measurements: 9.06 x 5.22 x 6.08 mm A GIA Natural Sapphire report is a gemological report issued...
Category

Sri Lankan Contemporary Vintage 20th Century Loose Gemstones

Materials

Sapphire

Hakimoto Pair of 18 mm Round Silver Tahiti Naget Baroque Pearl
Located in New York, NY
Hakimoto Pair Of 18 mm Round Silver Naget Tahiti Baroque Pearl 14.2 Grams Aproximate
Category

American 20th Century Loose Gemstones

Materials

Pearl

GIA Certified No Heat Pear Shape Carving Natural Sapphire Weighing 4.70 Carats
Located in New York, NY
GIA-certified No Heat Pear Shape Carving Natural Sapphire weighing 4.70 carats can be considered a valuable gemstone. GIA REPORT 222171092 Shape Pear Shape Carving Transparency Trans...
Category

Burmese Contemporary 20th Century Loose Gemstones

Materials

Sapphire

Hakimoto Pair of 14 mm Pink Botton Shape Cultured Pearls
Located in New York, NY
Hakimoto Pink Pair of Botton Cultured Pearls 7.6 grams 14.5-14.4 mm Aproximat
Category

American Modern 20th Century Loose Gemstones

Materials

Cultured Pearl

4 Carat Tanzanite 9mm Round Faceted Cut - Single Loose Stone
Located in Endwell, NY
Add this stunning round faceted cut tanzanite to your gemstone and jewelry collection, or make it the main focal point for your next jewelry design. This single loose stone measure...
Category

20th Century Loose Gemstones

Materials

Tanzanite

2.02ct Vivid Olive Green Tourmaline Fancy Octagon Emerald Loose Cut Gem
Located in Birmingham, GB
2.02ct Vivid Olive Green Tourmaline Fancy Octagon Emerald Loose Cut Gem 8.2x6mm Natural Olive Green Tourmaline Gemstone. 2.02 Carat with a beau...
Category

20th Century Loose Gemstones

Materials

Emerald, Tourmaline

GIA Certificated Oval Carved Double Sided Cabochon Emerald Weighing 53.64 Carats
Located in New York, NY
G I A G EMO L O G IC A L R E P O R T EMERALD REPORT GIA REPORT 522173152 Shape Oval Carved Double Cabochon Transparency Translucent Color Green Species Natural Beryl TREATMENT Clarit...
Category

Colombian Contemporary 20th Century Loose Gemstones

Materials

Emerald

4.25 Carat Tanzanite Pear-Shaped - Single Loose Stone
Located in Endwell, NY
Select this gorgeous ocean tanzanite for your next addition for any gemstone collection or jewelry concept. This single loose and precious gemstone measures 12.5mm x 9.5mm with a 6....
Category

20th Century Loose Gemstones

Materials

Tanzanite

5 Carat Tanzanite 10mm Round Faceted Cut - Single Loose Stone
Located in Endwell, NY
This loose tanzanite measures 10mm in diameter by 7.20mm in depth with a round faceted cut, giving it a good symmetry as it displays its breathtaking shade. This beautiful tanzanite...
Category

20th Century Loose Gemstones

Materials

Tanzanite

Rare 4.28ct IGI Certified Green Jadeite Jade ‘A’ Grade Oval Cabochon Loose Gem
Located in Birmingham, GB
Rare 4.28ct IGI Certified Green Jadeite Jade ‘A’ Grade Oval Cabochon Loose Gem IGI Certified Untreated A Grade GreenJadeite Gemstone. 4.28 Carat with a...
Category

20th Century Loose Gemstones

Materials

Jade

1.25 Carat Pear Shaped Columbian Emerald
Located in Endwell, NY
This gemstone comes from the estate of a private collector. It's a Columbian Emerald and weighs 1.25ct. It's 9x6mm pear shaped with a 4.5mm depth.
Category

20th Century Loose Gemstones

Materials

Emerald

1.15 Carat Pink Sapphire 8x5mm Oval Faceted Cut - Single Loose Stone
Located in Endwell, NY
This pink sapphire exhibits a beautiful magenta-pink hue, measuring a standard 8x5mm with a 2.1mm depth, making it perfect for jewelry design, different settings, or gem collection. ...
Category

20th Century Loose Gemstones

Materials

Pink Sapphire

4.50 Carat Spessartine Orange Garnet 12x9mm Pear Shaped - Single Loose Stone
Located in Endwell, NY
Add this naturally beautiful single loose gemstone to your gemstone collection, or set it into different mounting showcasing its stunning hue. This pear-shaped spessartine garnet ex...
Category

20th Century Loose Gemstones

Materials

Garnet

2.6 Carat Spessartine Orange Garnet 5mm Round Faceted Cut - Single Loose Stone
Located in Endwell, NY
A must-have for the avid gemstone collector, or set this stunning spessartine garnet into your next jewelry design. This naturally stunning garnet exhibits a deep yellow and reddis...
Category

20th Century Loose Gemstones

Materials

Garnet

5 Carat Spessartine Orange Garnet 10mm Round Faceted Cut - Single Loose Stone
Located in Endwell, NY
5 Carat Spessartine Orange Garnet 10mm Round Faceted Cut - Single Loose Stone This spessartine garnet loose stone features a classic round faceted ...
Category

20th Century Loose Gemstones

Materials

Garnet

Fine 0.88ct Blue Vivid Sapphire Pear Cut Rare Loose Cut Gemstone
Located in Birmingham, GB
Fine 0.88ct Blue Vivid Sapphire Pear Cut Rare Loose Cut Gemstone 6.5x5.3mm Fine Natural Vivid Blue Sapphire Gemstone. 0.88ct sapphire with a vivid blue...
Category

20th Century Loose Gemstones

Materials

Sapphire, Blue Sapphire

Unique Fine Ceylon Blue Violet Sapphire 0.82ct Oval Loose Cut Blue Rare VS
Located in Birmingham, GB
Unique Fine Ceylon Blue Violet Sapphire 0.82ct Oval Loose Cut Blue Rare 6x5mm VS Unique Ceylon Violet Blue Sapphire Gemstone. 0.82ct Carat...
Category

20th Century Loose Gemstones

Materials

Sapphire

Huge Yellow 27.75 Carat Loose Citrine Flower Square Cut from Brazil Mine
Located in Peshawar, PK
Gemstone Type : Citrine Weight : 27.75 Carats Dimensions : 18x17.9x13.4 mm Clarity : Loupe Clean Origin : Brazil Color: Yellow Shape: Square Cut: Flower Certificate: On Demand Month:...
Category

Brazilian Arts and Crafts 20th Century Loose Gemstones

Materials

Citrine

1.44ct Australian Vivid Blue Green Sapphire Oval Cut Loose Gem 7.3x6.2mm VS
Located in Birmingham, GB
1.44ct Australian Vivid Blue Green Sapphire Oval Cut Loose Gem 7.3x6.2mm VS Natural Australian Green Blue Sapphire Gem. 1.44 Carat with a beautiful ...
Category

20th Century Loose Gemstones

Materials

Sapphire, Green Sapphire

Natural Deep Blue Sapphire 1.45ct Oval Cut Loose Gemstone
Located in Birmingham, GB
Natural Deep Blue Sapphire 1.45ct Oval Cut Loose Gemstone 7.4x6.2mm Natural Deep Blue Sapphire Gemstone. 1.45 Carat with a deep blue colour and ver...
Category

20th Century Loose Gemstones

Materials

Blue Sapphire

0.73ct Deep Blue Natural Sapphire Oval Loose Cut Gemstone VS
Located in Birmingham, GB
0.73ct Deep Blue Natural Sapphire Oval Loose Cut Gemstone 5.8x4.8mm VS Natural Green Blue Sapphire Gemstone. 0.73 Carat with a beautiful deep blue colour and good clarity, a clean s...
Category

20th Century Loose Gemstones

Materials

Sapphire, Blue Sapphire

0.87ct Deep Blue Sapphire Square Cushion Cut IGI Certified Rare Loose Gemstone
Located in Birmingham, GB
0.87ct Deep Blue Sapphire Square Cushion Cut IGI Certified Rare Loose Gemstone Natural Deep Blue Cushion Sapphire In IGI Blister. 0.87 Carat with a very good square cushion and very...
Category

20th Century Loose Gemstones

Materials

Blue Sapphire

GRA Certified 2.06ct Green Blue Sapphire Loose Cushion Cut Gem
Located in Birmingham, GB
GRA Certified 2.06ct Green Blue Sapphire Loose Cushion Cut Gem 9.3x6.4mm GRA Certified Deep Green Blue Sapphire Gemstone. 2.06 Carat sapphire with...
Category

20th Century Loose Gemstones

Materials

Blue Sapphire, Sapphire

Deep Blue Untreated Oval Cut Sapphire IGI Certified 0.61ct Loose Rare Gem
Located in Birmingham, GB
Deep Blue Untreated Oval Cut Sapphire IGI Certified 0.61ct Loose Rare Gem Natural Deep Blue Untreated Sapphire In IGI Blister. 0.61 Carat with an excellent oval cut and very good cl...
Category

20th Century Loose Gemstones

Materials

Blue Sapphire, Sapphire

Natural 2.58ct Vivid Neon Blue Zircon Oval Cut Loose Gemstone 9.5x6.3mm VS
Located in Birmingham, GB
Natural 2.58ct Vivid Neon Blue Zircon Oval Cut Loose Gemstone 9.5x6.3mm VS Natural Vivid Neon Blue Zircon Gemstone. 2.58 Carat with a beautiful neon ...
Category

20th Century Loose Gemstones

Materials

Blue Zircon, Zircon

1.35ct Deep Blue Sapphire Rare Oval Cut IGI Certified Loose Gemstone in Blister
Located in Birmingham, GB
1.35ct Deep Blue Sapphire Rare Oval Cut IGI Certified Loose Gemstone in Blister Natural Deep Blue Oval Cut Sapphire In IGI Blister. 1.35 Car...
Category

20th Century Loose Gemstones

Materials

Blue Sapphire

1.09ct AIG Certified Deep Rare Blue Sapphire Oval Cut Loose Gemstone
Located in Birmingham, GB
1.09ct AIG Certified Deep Rare Blue Sapphire Oval Cut 6.6x5mm Loose Gemstone AIG Certified Deep Blue Sapphire Gemstone. 1.09 Carat sapphire with a beautiful deep blue colour. Fully ...
Category

20th Century Loose Gemstones

Materials

Blue Sapphire

1.28ct Fine Ceylon Blue Sapphire Oval Cut Loose Gem VVS Sri Lankan
Located in Birmingham, GB
1.28ct Fine Ceylon Blue Sapphire Oval Cut Loose Gem 7.6x5.2mm VVS Sri Lankan Fine Natural Ceylon Blue Sapphire Gemstone. 1.28 Carat with a vivid blue colour and very good clarity. O...
Category

20th Century Loose Gemstones

Materials

Blue Sapphire

Deep Blue Green Sapphire 1.20ct Pear Teardrop Cut Loose Gemstone 7x5.8mm VVS
Located in Birmingham, GB
Deep Blue Green Sapphire 1.20ct Pear Teardrop Cut Loose Gemstone 7x5.8mm VVS Natural Australian Deep Blue Green Sapphire Gemstone. 1.20 Carat with a beautiful deep blue green colour...
Category

20th Century Loose Gemstones

Materials

Sapphire, Green Sapphire

1.72ct Vivid Pink Natural Rhodolite Garnet Oval Cut Loose Gem VVS
Located in Birmingham, GB
1.72ct Vivid Pink Natural Rhodolite Garnet Oval Cut Loose Gem 7.7x6.7mm VVS Fine Natural Rhodolite Garnet Gemstone. 1.72 Carat with a beautiful vivid purple pink colour and excellen...
Category

20th Century Loose Gemstones

Materials

Garnet, Rhodolite

Fine 1.93ct Vivid Pink Purple Rhodolite Garnet Oval Cut Loose Gem IF
Located in Birmingham, GB
Fine 1.93ct Vivid Pink Purple Rhodolite Garnet Oval Cut Loose Gem IF 8x6.4mm Fine Loose Rhodolite Garnet Gemstone. 1.93 Carat with a beautiful vivid pink purple colour and excellent...
Category

20th Century Loose Gemstones

Materials

Garnet, Rhodolite

2.03ct Fine Deep Purple Spinel Natural Oval Cut 8.5x6.3mm Loose Rare Gem VS
Located in Birmingham, GB
2.03ct Fine Deep Purple Spinel Natural Oval Cut 8.5x6.3mm Loose Rare Gem VS Natural Deep Purple Spinel Gemstone. Beautiful 2.03 Carat spinel with a deep purple colour. This spinel a...
Category

20th Century Loose Gemstones

Materials

Spinel

Fine Deep Blue Natural Spinel 1.04ct Cushion Cut Loose Rare Gem
Located in Birmingham, GB
Fine Deep Blue Natural Spinel 1.04ct Cushion Cut 8.4x4mm Loose Rare Gem Natural Vivid Blue Spinel Gemstone. Beautiful natural 1.04 Carat spinel with a vivid blue colour and excellen...
Category

20th Century Loose Gemstones

Materials

Spinel

Untreated Cushion Cut Blue Sapphire 0.63ct IGI Certified Loose Gem
Located in Birmingham, GB
Untreated Cushion Cut Blue Sapphire 0.63ct IGI Certified Loose Gem 5.4x4.3mm Natural Untreated Deep Blue Sapphire Gemstone IGI Certified. 0.63 Carat s...
Category

20th Century Loose Gemstones

Materials

Blue Sapphire

Deep Royal Blue Untreated Oval Cut Sapphire IGI Certified 0.63ct Loose Rare Gem
Located in Birmingham, GB
Deep Royal Blue Untreated Oval Cut Sapphire IGI Certified 0.63ct Loose Rare Gem Natural Deep Royal Blue Untreated Sapphire In IGI Blister. 0.63 Carat with an excellent oval cut and ...
Category

20th Century Loose Gemstones

Materials

Blue Sapphire

1.04ct Untreated Green Sapphire IGI Certified Unheated Oval Cut Rare Loose Gem
Located in Birmingham, GB
1.04ct Untreated Green Sapphire IGI Certified Unheated Oval Cut Rare Loose Gem Natural Vivid Green Untreated Sapphire In IGI Blister. 1.04 Ca...
Category

20th Century Loose Gemstones

Materials

Green Sapphire

1.26ct Deep Blue Sapphire Oval Cut Rare 7.6x5.8mm Loose Gemstone VS
Located in Birmingham, GB
1.26ct Deep Blue Sapphire Oval Cut Rare 7.6x5.8mm Loose Gemstone VS Natural Oval Cut Deep Blue Sapphire Gemstone. 1.26 Carat sapphire with a beautiful deep blue colour. Also has ver...
Category

20th Century Loose Gemstones

Materials

Blue Sapphire

Vivid Yellow Green Sapphire 1.58ct Round Brilliant Cut Loose Gemstone
Located in Birmingham, GB
Vivid Yellow Green Sapphire 1.58ct Round Brilliant Cut Loose Gemstone 6.5mm Natural Yellow Green Round Cut Sapphire. 1.58 Carat with a bright ye...
Category

20th Century Loose Gemstones

Materials

Sapphire, Green Sapphire

1.48ct Titanium Purple Natural Spinel Oval Cut 8.2x5.8mm Loose Rare Gem
Located in Birmingham, GB
1.48ct Titanium Purple Natural Spinel Oval Cut 8.2x5.8mm Loose Rare Gem Natural Purple ‘Titanium’ Spinel Gemstone. Beautiful 1.48 Carat spinel with a grey purple colour, referred to...
Category

20th Century Loose Gemstones

Materials

Spinel

Unique 0.71ct Natural Green Blue Sapphire Cushion Rare Loose Gem 6.4x5mm VS
Located in Birmingham, GB
Unique 0.71ct Natural Green Blue Sapphire Cushion Rare Loose Gem 6.4x5mm VS Unique Natural Green Blue Cushion Cut Australian Sapphire Gemstone. 0.71 Carat with a beautiful unique vi...
Category

20th Century Loose Gemstones

Materials

Blue Sapphire, Sapphire

Natural 2.28ct Vivid Pink Red Rhodolite Garnet Cushion Loose Gemstone
Located in Birmingham, GB
Natural 2.28ct Vivid Pink Red Rhodolite Garnet Cushion 8.7x7mm Loose Gemstone Natural Loose Rhodolite Garnet Gem. 2.28 Carat with a beautiful...
Category

20th Century Loose Gemstones

Materials

Garnet, Rhodolite

1.05ct Fine Blue Spinel Marquise Cut Rare Gemstone 9.6x4.4mm Loose Rare Gem
Located in Birmingham, GB
1.05ct Fine Blue Spinel Marquise Cut Rare Gemstone 9.6x4.4mm Loose Rare Gem Fine Natural Vivid Blue Spinel Gemstone. 1.05 Carat spinel with a fine vivid blue colour and good clarity...
Category

20th Century Loose Gemstones

Materials

Spinel

2.12ct Pink Purple Natural Rhodolite Garnet Oval Cut Loose Gem VVS
Located in Birmingham, GB
2.12ct Pink Purple Natural Rhodolite Garnet Oval Cut Loose Gem 7.7x6.7mm VVS Fine Natural Rhodolite Garnet Gemstone. 2.12 Carat with a beautiful vivid purple pink colour and excelle...
Category

20th Century Loose Gemstones

Materials

Rhodolite, Garnet

Antique Hardstone Intaglio - Unset Gemstone - Europe - Early 20th Century
Located in Chatham, CA
Antique Roman style hardstone intaglio gemstone - hand carved male warrior in profile - approximately 8.45 carats - unset (loose) - unsigned - Europe - early 20th century. Excellent...
Category

European Classical Roman 20th Century Loose Gemstones

Fine 1.51ct Vivid Purple Pink Rhodolite Garnet Oval Cut Loose Gem VVS
Located in Birmingham, GB
Fine 1.51ct Vivid Purple Pink Rhodolite Garnet Oval Cut Loose Gem 7.6x6.2mm VVS Fine Loose Rhodolite Garnet Gemstone. 1.51 Carat with a beautiful vivid purple pink colour and excell...
Category

20th Century Loose Gemstones

Materials

Garnet, Rhodolite

1.15ct Fine Pinkish Purple Spinel Natural Oval Cut Loose Gemstone
Located in Birmingham, GB
1.15ct Fine Pinkish Purple Spinel Natural Oval Cut 6.8x5.6mm Loose Gemstone Natural Fine Purple Pink Spinel Gemstone. 1.15 Carat spinel with a vivid purple pink colour and very good...
Category

20th Century Loose Gemstones

Materials

Spinel

Fine 1.80 Vivid Pink Purple Rhodolite Garnet Oval Cut Loose Gem VVS
Located in Birmingham, GB
Fine 1.80 Vivid Pink Purple Rhodolite Garnet Oval Cut Loose Gem 7.7x6.3mm VVS Fine Loose Rhodolite Garnet Gemstone. 1.80 Carat with a beautiful vivid pink purple colour and excellen...
Category

20th Century Loose Gemstones

Materials

Garnet, Rhodolite

GIA Certified 3.48 Carat Rare Pinkish Purple Sapphire
Located in San Francisco, CA
This 3.59 carat Cushion Antique shaped GIA Certified Pinkish Purple Sapphire was selected by our experts for its Rare luster.
Category

Sri Lankan 20th Century Loose Gemstones

Materials

Sapphire, Pink Sapphire, Purple Sapphire

35.80ct Loose Bi-Color Tourmaline Gemstone, Craved Silhouette JAGi Graded
Located in Greensboro, NC
Shape/Cut: Carved Silhouette Clarity: Moderately Included Color: Very Strong Bluish Green Dimensions (mm): 40.000 x 22.200 x 5.850 Weight: 35.80ct Cut Grade: Good JAGi Report...
Category

Unknown 20th Century Loose Gemstones

Materials

Tourmaline

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