New York City - Loose Gemstones
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Item Ships From: New York City
No Oil, Matched Pair of Colombian Cushion-Cut Emeralds, Gübelin Certified
Located in New York, NY
This perfectly matched pair of Colombian cushion-cut emeralds, totaling 5.16 carats, is a rare and collectible find. Both stones are Gübelin-certified and carry "No Indications of Cl...
Category
2010s New York City - Loose Gemstones
Materials
Emerald
GIA Certified 1.13ct Natural Alexandrite Color change 54774
By Unbranded
Located in New York, NY
GIA Certified Natural Alexandrite
1.13ct Transparent Cushion Cut
6.98 x 4.78 x 3.83
Report #6204425887
Stating Color Change Blue Green - Gray Purple
Category
21st Century and Contemporary Russian Empire New York City - Loose Gemstones
Materials
Alexandrite
1.04ct Fancy Vivid Purple-Pink Oval Diamond Ring
By Rare Colors
Located in New York, NY
This exceptional 1.04-carat Fancy Vivid Purple-Pink diamond is truly one of a kind—there is no other diamond like it on Earth. GIA-certified and masterfully cut in a brilliant oval s...
Category
2010s New York City - Loose Gemstones
Materials
Diamond, Pink Diamond
Natural Tanzanite Faceted Cut AAAA 21.43 Cts Loose Gemstone Tanzanite Jewelry
Located in New York, NY
♥ Welcome to Blue Star Gems: Your stop for Natural Loose Gemstones for Jewelry making and Best Quality and affordable Gemstones for the Price you Pay
We are Loose Gemstones Manufactu...
Category
21st Century and Contemporary Tanzanian Art Deco New York City - Loose Gemstones
Materials
Tanzanite
Antique Cameo Signed G. Stella Tiara
Located in New York, NY
Weight: 46.3 Grams
Stone: Sardonyx Shell
Measurements: 3.45 x 135.28 x 51 mm
Signed: G. Stella.
ITEM #: BR-1463-112624-12
Circa 1840s. Museum Quality Cameo Tiara...
Category
19th Century Neoclassical Antique New York City - Loose Gemstones
Materials
Other
Ancient Persian Sasanian Empire Emerald Intaglio Seal
Located in New York, NY
An ancient Persian Sasanian Empire hand carved Emerald intaglio bead seal. Carved Gemstones, Ancient Artifacts and Historical Memorabilia For Collector...
Category
19th Century Unknown Antique New York City - Loose Gemstones
Materials
Emerald, Sterling Silver
GIA Certified 0.81 Carat Cushion Fancy Deep Orangy Yellow Natural Diamond
By Diamond Stars Jewelry, Inc.
Located in New York, NY
Loose Diamond GIA Certified
This is a Natural Diamond Cushion Modified Brilliant Cut
The diamond is 0.81 Carat SI1 Clarity
The color is Fancy Deep Orangy Yellow
The stone measures 5....
Category
21st Century and Contemporary Unknown Contemporary New York City - Loose Gemstones
Materials
Diamond, Yellow Diamond
Natural Tanzanite 7x9 mm 2.10 Cts Oval 3A Loose Gemstone December Birthstone
Located in New York, NY
♥ Welcome to Blue Star Gems: Your stop for Natural Loose Gemstones for Jewelry making and Best Quality and affordable Gemstones for the Price you Pay
We are Loose Gemstones Manufactu...
Category
21st Century and Contemporary Tanzanian Art Deco New York City - Loose Gemstones
Materials
Tanzanite
2.00ct Fancy Light Yellow-Green Marquise Cut Diamond - Loose
By Rare Colors
Located in New York, NY
This rare 2.00 carat fancy light yellow-green marquise cut diamond offers a beautiful blend of softness and vibrancy. With its elongated silhouette and graceful curves, the marquise ...
Category
2010s New York City - Loose Gemstones
Materials
Diamond
GIA Certified 2.02 Carat Oval Cut Loose Diamond E / VVS1
Located in New York, NY
Our Gorgeous 2.02 Carat Pear Shape Cut Natural Loose Diamond will be the star of any unique engagement ring design.
GIA certified
E / VVS1
Pol...
Category
2010s American New York City - Loose Gemstones
Materials
Diamond
230.25 Carat Carbonado Black Diamond
Located in New York, NY
This huge 230.25 carat completely natural and lustrous black diamond is the most unique treasure you will ever buy. Scientists agree that these rare gemstones may have been formed in...
Category
2010s Canadian New York City - Loose Gemstones
Materials
Black Diamond
251.76 Carat Rough Black Diamond
Located in New York, NY
This lustrous, huge rough black diamond mined in Canada weighs 251.76 carats. Black diamonds owe their opaque color to natural impurities in the crystal lattice and make beautiful co...
Category
2010s Canadian New York City - Loose Gemstones
Materials
Black Diamond
91.40 Carat Natural Rough Black Diamond Cube
Located in New York, NY
This very lustrous, large rough black diamond mined in Canada weighs 91.40 carats and has crystallized in a natural cube shape. Black diamonds owe their opaque color to natural impur...
Category
2010s Canadian New York City - Loose Gemstones
Materials
Black Diamond
64.92 Carat Rough Black Diamond
Located in New York, NY
This lustrous, large rough black diamond mined in Canada weighs 64.92 carats. Black diamonds owe their opaque color to natural impurities in the crystal lattice and make beautiful co...
Category
2010s Canadian New York City - Loose Gemstones
Materials
Black Diamond
71.19 Carat Rough Black Diamond
Located in New York, NY
This lustrous rough black diamond mined in Canada weighs a hefty 71.19 carats. Black diamonds owe their opaque color to natural impurities in the crystal lattice and make beautiful c...
Category
2010s Canadian New York City - Loose Gemstones
Materials
Black Diamond
GIA Certified 12.57 Carat Demantoid Garnet
Located in New York, NY
This tremendous over 12.50 carat green-brown round cut garnet var. demantoid from Madagascar displays a few horsetail inclusions. Commonly found in this rare species of garnet, the i...
Category
2010s Malagasy New York City - Loose Gemstones
Materials
Garnet
7.4ct Green Tourmaline Electric Color Cushion Cut
By FERRUCCI
Located in New York, NY
7.4ct Green Tourmaline Cushion cut, very clean mineral, electric green.
Design with us a unique, custom piece of jewelry art to wear on your important moments, something that will pa...
Category
2010s New York City - Loose Gemstones
Materials
Tourmaline
GIA Certificated Oval Carved Double Sided Cabochon Emerald Weighing 53.64 Carats
By OGI Ltd
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 Clarity Enhanced (F2)
One loose stone
Weight: 53.64 carats
Measurements: 26.97 x 19.90 x 12.90 mm
An oval carved double-sided cabochon emerald weighing 53.64 carats, certified by GIA (Gemological Institute of America), can be considered rare and valuable
Comments: Due to their growth conditions in nature and recovery methods, most emeralds contain surface reaching features. For this reason, clarity enhancement is a common trade practice
Larger emeralds are generally rarer and more valuable, assuming all other quality factors are favorable
GIA is the most established certification company in the world. They have been around since 1931 and are the foremost authority on diamonds, gems and pearls. They are a non-profit organization that sets the standards for jewels and identification world-wide.
Gemstones are rare natural resources of nature. Each gemstone is unique. One can compare the market for gemstones well with the art market
Untreated gemstones are best suited for investment. In the case of sapphire and ruby, this implies that they are not heated, as 98...
Category
Early 20th Century Colombian Contemporary New York City - Loose Gemstones
Materials
Emerald
GIA Certified - 1.72 Carats Fancy Intense Orangy Pink Diamond
Located in Ramat Gan, IL
Introducing the Exquisite GIA Certified 1.72 Carats Fancy Intense Orangy Pink Diamond
Elevate your jewelry collection to new heights with our stunning GIA Certified 1.72 Carats Fanc...
Category
21st Century and Contemporary Israeli New York City - Loose Gemstones
Materials
Diamond, Pink Diamond
86.22 Carat Rough Black Diamond
Located in New York, NY
This extremely lustrous and large rough black diamond mined in Canada weighs 86.22 carats. Black diamonds owe their opaque color to natural impurities in the crystal lattice and make...
Category
2010s Canadian New York City - Loose Gemstones
Materials
Black Diamond
AGL Certified Gemstone Natural Corundum Pink Sapphire Weighing 2.92 Carats
By OGI Ltd
Located in New York, NY
AGL certificate Natural Pink Sapphire weighing 2.92 carats
Purplish Pink Color
Oval Shaped, mix cut
Heated
Color Stability Excellent
Measuring 8.63x7.11x5.10 mm
Natural corundum pi...
Category
Mid-20th Century Sri Lankan Contemporary New York City - Loose Gemstones
Materials
Pink Sapphire
Collection Of Six Ancient Islamic Intaglio Seals
Located in New York, NY
A lot of three ancient Roman colorful intaglio seals. Circa 1st to 3rd centuries AD. The two pieces are crafted from carnelian and feature a hand carved image of the god Mercury wear...
Category
15th Century and Earlier European Antique New York City - Loose Gemstones
Materials
Sterling Silver
7x5 Oval Natural Ruby Gemstone July Birthstone Wholesale 5 Pisces Loose Gemstone
Located in New York, NY
**Natural Ruby Loose Gemstone for JewelryMaking (7x5mm Oval Faceted Cut)**
Immerse yourself in the fiery allure of natural rubies, treasured for their vivid red hue and captivating ...
Category
21st Century and Contemporary Unknown New York City - Loose Gemstones
Materials
Ruby
GIA Certified - 7.30 carat Fancy Deep Brownish Greenish Yellow Diamond
Located in Ramat Gan, IL
Introducing the Exquisite 7.30 Carat Heart Shape Diamond in Fancy Deep Brownish Greenish Yellow:
Elegance meets rarity in this stunning 7.30-...
Category
21st Century and Contemporary Israeli New York City - Loose Gemstones
Materials
Diamond, Yellow Diamond
0.92 TCW Yellow Cushion Diamond Loose Stones
Located in New York, NY
Weight: 0.2 Grams
Stone: 0.92 TCW Yellow Diamond (0.30+ ct.)
Measurements:
3.8 x 3.35 x 2.55 mm
3.6 x 3.3 x 2.85 mm
3.7 x 3.25 x 2.6 mm
ITEM #: BR-1471-120424-03
Category
21st Century and Contemporary New York City - Loose Gemstones
Materials
Yellow Diamond
GIA Certified 0.25 CT Light Pink Old European Diamond
Located in New York, NY
ITEM DESCRIPTION
ID #:
54283
Stone Shape:
ROUND ROSE CUT
Diamond Weight:
0.25 CT
Clarity:
None
Color:
Very Light Pink
Cut:
Excellent
Measurements:
4.58 - 4.66 x 1.19 mm
Symmetry:
...
Category
15th Century and Earlier Antique New York City - Loose Gemstones
Materials
Pink Diamond
9.03 Carat White Diamond Crystal
Located in New York, NY
This natural white diamond single crystal out of Canada weighs 9.03 carats and displays amazing translucency and clarity. With beautiful luster and sharply-defined crystallization, i...
Category
2010s Canadian New York City - Loose Gemstones
Materials
White Diamond
32.75 Carat Emerald Cut Watermelon Tourmaline
Located in New York, NY
This striking 32.75-carat Watermelon Tourmaline showcases a rare and highly desirable bi-color transition, blending delicate blush pink into rich teal blue with natural clarity and b...
Category
2010s Brazilian New York City - Loose Gemstones
Materials
Other, Tourmaline
GIA Certified 9.85 Carat Natural Color Change Alexandrite
Located in New York, NY
This stunning oval nearly 10 carat genuine alexandrite – a rare color-change Alexandrite of this size is almost impossible to find on the market. The stone changes from a lavish fier...
Category
2010s Sri Lankan New York City - Loose Gemstones
Materials
Alexandrite
Fire Opal From Mexico
Located in New York, NY
Mexico
Opal is composed of hydrated silica. It is an amorphous silicate, meaning it does not form crystals. Opals are structurally composed of tiny spheres of silica which, when arranged in perfect geometry, create the famous play of color associated with the stones. The symmetrical arrangement of silica balls acts like a prism, which allows the rainbow spectrum of colors to be visible to the naked eye.
Fire opal is a transparent to translucent opal with warm body colors of yellow to orange to red. Although it does not usually show any play of color, occasionally a stone will exhibit bright green flashes. The most famous source of fire opals in Mexico is in the state of Queretaro; these opals are commonly called Mexican fire opals. Fire opals that do not show a play of color are sometimes referred to as jelly opals.
Cantera opal...
Category
2010s Mexican New York City - Loose Gemstones
Materials
Fire Opal
【Conchéa】Flamingo Flame Matched 2.8ct Loose Conch Pearls
Located in New York, NY
This rare pair of natural conch pearls features the highly sought-after Flamingo Pink hue, each exhibiting a vibrant and well-defined flame pattern. At 1.4 carats each, the pearls ar...
Category
21st Century and Contemporary Japanese New York City - Loose Gemstones
Materials
Pearl
Extra Large 22k Natural Crystalized Sponge/Leaf Gold Nugget Specimen 116.7 Grams
Located in New York, NY
This exceptional natural gold nugget specimen weighs 116.7 grams and features intricate crystallized sponge and leaf-like formations, with approximately 50 grams of pure 22k gold. Or...
Category
20th Century New York City - Loose Gemstones
Materials
Quartz
Gia Certified 0.19 Carat Light Purplish I1 Loose Old European Diamond
Located in New York, NY
ITEM DESCRIPTION
ID #:
NYC57087
Stone Shape:
CIRCULAR BRILLIANT
Diamond Weight:
0.19 CT
Clarity:
I1
Color:
LIGHT PURPLISH
Cut:
Excellent
Measurements:
3.42 x 3.45 x 2.24 mm
Depth %:
...
Category
15th Century and Earlier Antique New York City - Loose Gemstones
Materials
White Diamond
GIA Certified 1.01 Carat Brilliant Cut Loose Diamond D / VS1
Located in New York, NY
1.01 Round Brilliant Cut Loose Diamond
GIA certified
D/ VS1
Grade Cut : Very Good
Polish: EX
Symm: EX
Depth: 61
Stone Table: 59
Category
2010s American New York City - Loose Gemstones
Materials
Diamond
Natural Tanzanite AAAA Emerald Cut 25.47 Cts December Birthstone Loose Gemstone
Located in New York, NY
♥ Welcome to Blue Star Gems: Your stop for Natural Loose Gemstones for Jewelry making and Best Quality and affordable Gemstones for the Price you Pay
We are Loose Gemstones Manufactu...
Category
21st Century and Contemporary Tanzanian Art Deco New York City - Loose Gemstones
Materials
Tanzanite
10/0.59 Carat Star Shape G Color Vvs2 Clarity Diamond
Located in New York, NY
ITEM DESCRIPTION
ID #:
NYC56458
Stone Shape:
STAR DIAMOND
Diamond Weight:
0.59ct (10 diamonds)
Clarity:
VVS2
Color:
G
Cut:
Excellent
Measurements:
4.08 x 3.35 mm
Depth %:
0%
Table %...
Category
15th Century and Earlier Antique New York City - Loose Gemstones
Materials
White Diamond
Natural Pink Morganite Octagon AAAA Grade Eye Clean Clarity Loose Gemstone
Located in New York, NY
PRODUCT DETAILS..........❤️
★ Gem Type: Natural Pink Morganite
★ Weight: 38.18 Carats
★ Measurements (Length x Width x Height): 24.18mm length x18.27mm width x11.73 Height
★ Shape: ...
Category
21st Century and Contemporary African New York City - Loose Gemstones
Materials
Morganite
Collection Of Huge Drilled Green Turquoise Beads
Located in New York, NY
A collection of huge, drilled green Turquoise beads of different shapes. Antique and Vintage Gem Stones, Beads and Collectibles.
Dimensions: Average size: L 3/4 in. All measurements...
Category
20th Century Unknown New York City - Loose Gemstones
Materials
Turquoise, Sterling Silver
3.05 Carat Cushion Cut Natural Loose Diamond F / SI1 GIA Certified
Located in New York, NY
Gorgeous GIA Certified 3.05 Carat Cushion Cut Natural Diamond.
Color - F
Clarity- SI 1
Symmetry - Very Good
Fluorescence- None
Our Diamond can be mounted on 18K or 14 K gold ring f...
Category
2010s American New York City - Loose Gemstones
Materials
Diamond
Ancient Susanian Carved Agate Head Intaglio Bead
Located in New York, NY
An ancient Sasanian hand carved red agate intaglio bead. The bead depicts a head with a high hairstyle. Ancient Sasanian Jewelry Wares and Accessories and Collectibles.
Dimensions: ...
Category
19th Century Unknown Antique New York City - Loose Gemstones
Materials
Agate, Sterling Silver
Natural Pink Morganite Square Cut AAAA Grade 22.57x22.37x13.37 Loose Gemstone
Located in New York, NY
PRODUCT DETAILS..........❤️
★ Gem Type: Natural Pink Morganite
★ Weight: 41.21 Carats
★ Measurements (Length x Width x Height): 22.57mm length x22.37mm width x13.37 Height
★ Shape: ...
Category
21st Century and Contemporary African New York City - Loose Gemstones
Materials
Morganite
GIA Certified 1.01 Carat Brilliant Cut Loose Diamond
Located in New York, NY
1.01 Round Brilliant Cut Loose Diamond
GIA certified
D/ SI2
Grade Cut : Good
Polish: Very Good
Symm: Very Good
Depth: 65.5
Stone Table: 57
Category
2010s American New York City - Loose Gemstones
Materials
Diamond
AAAA High Quality Natural Tanzanite 17.9 Cts Loose Gemstone Tanzanite Jewelry
Located in New York, NY
♥ Welcome to Blue Star Gems: Your stop for Natural Loose Gemstones for Jewelry making and Best Quality and affordable Gemstones for the Price you Pay
We are Loose Gemstones Manufactu...
Category
21st Century and Contemporary Tanzanian Art Deco New York City - Loose Gemstones
Materials
Tanzanite
GIA Emerald Cameo 20.10ct Ural Mountains Origin
Located in New York, NY
It is quite rare to find an emerald cameo that is this large a size.
The motif of the woman with flowing hair is possibly a Gorgon as in Medusa. The wei...
Category
Mid-19th Century European Victorian Antique New York City - Loose Gemstones
Materials
Emerald
1.00 Carat Pear Brilliant Gia Certified X Color Si1 Clarity Diamond
Located in New York, NY
ITEM DESCRIPTION
ID #:
NYC55425
Stone Shape:
PEAR MODIFIED BRILLIANT
Diamond Weight:
1.00ct
Clarity:
SI1
Color:
W to X Range
Cut:
Excellent
Measurements:
8.56 x 5.52 x 2.71 mm
Depth ...
Category
15th Century and Earlier Antique New York City - Loose Gemstones
Materials
White Diamond
【Conchéa】Rosé Ember 6.95ct Loose Conch Pearl
Located in New York, NY
A rare jewel of extraordinary color and presence, this 6.95-carat natural conch pearl glows with a deep pink hue and a mesmerizing flame pattern that dances across its polished caboc...
Category
21st Century and Contemporary Japanese New York City - Loose Gemstones
Materials
Pearl
GIA Certified 18.0+ Carat Emerald Cut Diamond
By GEMME
Located in New York, NY
Gorgeous Emerald Cut Diamond over 18 Carats (please inquire about exact weight)
GIA Certified as I color and VS2 clarity.
Please inquire for stones in any shape, size and quality.
Category
2010s New York City - Loose Gemstones
Materials
Diamond
1.00 Carat Pear Brilliant Gia Certified Fancy Deep Brownish Greenish Yellow Si2
Located in New York, NY
ITEM DESCRIPTION
ID #:
NYC56775
Stone Shape:
PEAR MODIFIED BRILLIANT
Diamond Weight:
1.00ct
Clarity:
SI2
Color:
Fancy Deep Brownish Greenish Yellow
Cut:
Excellent
Measurements:
8.25 ...
Category
15th Century and Earlier Antique New York City - Loose Gemstones
Materials
Yellow Diamond
Real Pink Morganite Pear Faceted Cut 35.35x21.41x15.28MM Loose Gemstone Jewelry
Located in New York, NY
PRODUCT DETAILS..........❤️
★ Gem Type: Natural Pink Morganite
★ Weight: 61.54 Carats
★ Measurements (Length x Width x Height): 35.35mm length x21.41mm width x15.28 Height
★ Shape: ...
Category
21st Century and Contemporary African New York City - Loose Gemstones
Materials
Morganite
Colombian Octagonal Emerald, Vivid Green “Muzo” Type, GRS & Gübelin Certified
Located in New York, NY
This rare and visually striking Colombian emerald, weighing 8.55 carats, is certified by both GRS and Gübelin Gem Lab. The stone features a classic octagonal (emerald) cut and exhibi...
Category
2010s New York City - Loose Gemstones
Materials
Emerald
Fancy Deep Orange Brown GIA Certified 1.47 ct Natural Diamond
Located in New York, NY
ITEM DESCRIPTION
Stone Shape: Pear
Diamond Weight: 1.47 Carat
Color: Fancy Deep Orange Brown
Measurements: 8.59 x 6.02 x 4.13 mm
Symmetry: Good
Polish: Good
Fluorescence: Medium Yel...
Category
21st Century and Contemporary Modern New York City - Loose Gemstones
Materials
Diamond
GIA certified Exquisite 1.01ct Pear-Cut Natural Diamond SI2 M
Located in New York, NY
Discover the enchanting beauty of this pear-shaped diamond, meticulously crafted with a multitude of facets that catch and reflect light, creating a stunning sparkle. The diamond fea...
Category
Early 17th Century Antique New York City - Loose Gemstones
Materials
Diamond
0.40 Carat Natural Fancy Intense Purple-Pink Diamond, Cushion Cut, GIA Report.
Located in New York, NY
A natural 0.40 carat. Fancy Intense Purple-Pink Diamond, Cushion shape. graded by GIA as SI1 in clarity. A gorgeous Pink diamond with a captivatin...
Category
21st Century and Contemporary American Contemporary New York City - Loose Gemstones
Materials
Pink Diamond
Fancy Brownish Greenish Yellow GIA Certified 1.21 ct Natural Diamond
Located in New York, NY
ITEM DESCRIPTION
Stone Shape: Pear
Diamond Weight: 1.21 Carat
Color: Fancy Brownish Greenish Yellow
Measurements: 9.44 x 5.56 x 3.28 mm
Symmetry: Good
Polish: Very Good
Fluorescence...
Category
21st Century and Contemporary Modern New York City - Loose Gemstones
Materials
Diamond
2.39 Carat Genuine and Natural Oval-Shaped Certified Brazilian Alexandrite
Located in New York, NY
A beautiful and fine-quality oval-shaped mixed-cut Brazilian Alexandrite with 90%-100% (Prominent) Color-Change and Excellent Quality of Color-Change from Blue-Green to Purple-Pink c...
Category
20th Century Brazilian New York City - Loose Gemstones
Materials
Alexandrite
GIA Certified Carved Colombia Emerald Loose Stone Weighing 4.35 Carats
By OGI Ltd
Located in New York, NY
Introducing our exquisite GIA certified carved Colombia Emerald loose stone, a true masterpiece of nature. This captivating gem weighs a remarkable 4.35 carats, making it a truly val...
Category
20th Century Colombian Contemporary New York City - Loose Gemstones
Materials
Emerald
GIA Certified No Treatment Octagonal Natural Quartz Citrine Weighing 42.43 Carat
By OGI Ltd
Located in New York, NY
Rarity is an essential factor in determining the value of gemstones.
Natural citrines are rarer than amethysts or smoky quartz because they occur less frequently in nature. The abse...
Category
Early 20th Century Malagasy Contemporary New York City - Loose Gemstones
Materials
Citrine, Quartz
1.01 Carat Antique Moval L-VS2 Natural Diamond GIA Certified
Located in New York, NY
ITEM DESCRIPTION
ID #: NYC57471
Stone Shape: Moval
Diamond Weight: 1.01 carat
Clarity: VS2
Color: L
Cut: Excellent
Measurements: 8.75 x5.44 x 2.71 mm
Depth %: 49.70%
Table %: 59%
...
Category
21st Century and Contemporary New York City - Loose Gemstones
Materials
White Diamond
