North American Loose Gemstones
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Place of Origin: North American
GIA 33.79 Carat Fancy Black Oval Shape Loose Diamond
Located in Great Neck, NY
GIA 33.79 Carat Fancy Black Oval Shape Loose Diamond
Treated Color
Category
2010s North American Loose Gemstones
Materials
Diamond, Black Diamond
GIA 5.65 Carat Natural Blue Radiant Cut Sapphire
Located in Great Neck, NY
GIA Natural cornflower blue radiant cut sapphire, heat only.
Weighs 5.65 carats
*Free shipping within the U.S.*
Category
2010s Modern North American Loose Gemstones
Materials
Sapphire
GIA 10.72 Carat Natural Blue Oval Cut Sapphire
Located in Great Neck, NY
GIA Natural cornflower blue oval cut sapphire, heat only.
Weighs 10.72 carats
*Free shipping within the U.S.*
Category
2010s Modern North American Loose Gemstones
Materials
Sapphire
GIA 3.50 Carat Natural Blue Heart Cut Sapphire
Located in Great Neck, NY
GIA Natural royal blue heart cut sapphire, heat only.
Weighs 3.50 carats
*Free shipping within the U.S.*
Category
2010s Modern North American Loose Gemstones
Materials
Sapphire
GIA 6.58 Carat Natural Violetish Pastel Blue Natural Oval Shape Sapphire
Located in Great Neck, NY
GIA Natural Pastel violet blue oval cut sapphire, heat only.
Weighs 6.58 carats
*Free shipping within the U.S.*
Category
2010s Modern North American Loose Gemstones
Materials
Sapphire
GIA 3.50 Carat Natural Blue Heart Cut Sapphire
Located in Great Neck, NY
GIA Natural royal blue heart cut sapphire, heat only.
Weighs 3.50 carats
*Free shipping within the U.S.*
Category
2010s Modern North American Loose Gemstones
Materials
Sapphire
GIA 6.58 Carat Natural Violetish Pastel Blue Natural Oval Shape Sapphire
Located in Great Neck, NY
GIA Natural Pastel violet blue oval cut sapphire, heat only.
Weighs 6.58 carats
*Free shipping within the U.S.*
Category
2010s Modern North American Loose Gemstones
Materials
Sapphire
GIA 5.65 Carat Natural Blue Radiant Cut Sapphire
Located in Great Neck, NY
GIA Natural cornflower blue radiant cut sapphire, heat only.
Weighs 5.65 carats
*Free shipping within the U.S.*
Category
2010s Modern North American Loose Gemstones
Materials
Sapphire
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 North American Loose Gemstones
Materials
Black Diamond
0.94 Carat Australian Boulder Opal Loose Gemstone Trillion 7x6.5mm
Located in Columbus, OH
Presenting a 0.94 carat australian boulder opal loose gemstone!
Specifications
Stone: Boulder Opal
Shape: Trillion
Treatment: None
Hardness: 5.5-6.5
Cut: Cabochon
Origin: Australi...
Category
2010s North American Loose Gemstones
Materials
Opal
GIA 0.15 Carat Natural Fancy Deep Orange Brown Pear Shape Loose Diamond
Located in Great Neck, NY
GIA natural fancy deep orange brown pear shape diamond weighing 0.15 carats.
Category
2010s North American Loose Gemstones
Materials
Diamond, Brown Diamond
GIA Certified 2.27 Cts Incredibly Rare Pink-Orange Rhodochrosite Colorado Mine
Located in บางรัก, TH
Rhodochrosite from Colorado mines is renowned for its vibrant pink to red hues and distinct banding patterns. Mined primarily in the Sweet Home Mine near Alma, Colorado, it's prized ...
Category
21st Century and Contemporary North American Loose Gemstones
Materials
Rhodocrosite
1.59 Carat Grey Spinel Gemstone Heart Shape 8 x 7mm Loose Gemstone
Located in Columbus, OH
Presenting a 1.59 carat Grey Spinel gemstone! This gemstone's brilliance and clarity makes it a versatile choice for various jewelry designs, offe...
Category
2010s North American Loose Gemstones
Materials
Spinel
1.01 Carat Brazilian Opal Loose Gemstone Marquise 13x5mm
Located in Columbus, OH
Presenting a 1.01 carat marquise shape brazilian opal gemstone! Nothing beats this gem’s play-of-color! This gemstone is ideal for creating elegant and ...
Category
2010s Art Deco North American Loose Gemstones
Materials
Opal
0.59 Carat Imperial Topaz Gemstone Pear shape 10x4mm Loose Gemstone
Located in Columbus, OH
Presenting a 0.59 carat Imperial Topaz gemstone! A valuable addition to to any collection or jewelry peice!
Specifications
Stone: Imperial Topaz
Shape: Pear
Treatment: Heated
Hardne...
Category
2010s North American Loose Gemstones
Materials
Topaz, Imperial Topaz
7.33 Carat Ethiopian Opal Gemstone Oval 17x12.5mm Loose Gemstone
Located in Columbus, OH
Presenting a 7.33 carat ethiopian opal loose gemstone. Nothing beats this gem’s play-of-color! This gemstone is ideal for creating elegant and enchanting jewelry pieces!
Specificat...
Category
2010s Art Deco North American Loose Gemstones
Materials
Opal
2.56 TCW Oval Ruby Burma No Heat
Located in New York, NY
ITEM DESCRIPTION
ID #: NYC57872
Stone Shape: Oval
Diamond Weight: 2.56 Carat
Measurements: 9.01 x 6.93 x 4.64 mm
Appraisal Value: $7000
Our Price: $3500
A free online appraisal i...
Category
21st Century and Contemporary Modern North American Loose Gemstones
Materials
Ruby
Elongated 1.36 Carat Tri-color Tourmaline Gemstone Pink, White & Green EM 9x5mm
Located in Columbus, OH
Presenting an elongated emerald cut 1.36 carat tourmaline gemstone!
This gemstone exhibits a range of colours such as green, white and pink. It's elongated form makes it suitable f...
Category
21st Century and Contemporary Modern North American Loose Gemstones
Materials
Tourmaline
Elongated 2.32 Carat Brazilian Opal Loose Gemstone Oval 13x7mm
Located in Columbus, OH
Presenting a 2.32 carat oval brazilian opal gemstone! Nothing beats this gem’s play-of-color! This gemstone is ideal for creating elegant and enchanting...
Category
2010s Modern North American Loose Gemstones
Materials
Opal
Elongated 15.86 Carat Rutilated Quartz Loose Gemstone EM 20x15mm
Located in Columbus, OH
Presenting an elongated emerald cut 15.86 carat rutilated quartz loose gemstone! This gemstone exhibits a rectangular shape with precise facets that accenture it's clarity and brilli...
Category
2010s Modern North American Loose Gemstones
Materials
Quartz
Sparkling 3.78 Carat Blue Zircon Gemstone Pear 8x7mm
Located in Columbus, OH
A gorgeous pear shape blue zircon looking for it's next home. If you feel a sparkle of excitement seeing this gem and want to design a one of a kind piece of jewelry, let us know!
...
Category
21st Century and Contemporary North American Loose Gemstones
Materials
Zircon, Blue Zircon
Vivid 5 Carat Blue Zircon Gemstone Cushion 8.5x7mm
Located in Columbus, OH
A gorgeous cushion shape blue zircon looking for it's next home. If you feel a sparkle of excitement seeing this gem and want to design a one of a kind piece of jewelry, let us know!...
Category
2010s Modern North American Loose Gemstones
Materials
Zircon, Blue Zircon
5.19 Carats Natural Heat Vivid Blue Radiant Cut Sapphire
Located in Great Neck, NY
5.19 Carats Natural Heat Vivid Blue Radiant Cut Sapphire
9.8mm x 11.5mm
*Free shipping within the U.S.*
Category
2010s North American Loose Gemstones
Materials
Sapphire
Sparkling 4.13 Carat Blue Zircon Gemstone Oval 8x7mm
Located in Columbus, OH
A gorgeous oval shape blue zircon looking for it's next home. If you feel a sparkle of excitement seeing this gem and want to design a one of a kind piece of jewelry, let us know!
C...
Category
2010s Modern North American Loose Gemstones
Materials
Zircon, Blue Zircon
Elongated 4.77 Carat Blue Zircon Gemstone EM 11x6mm
Located in Columbus, OH
A gorgeous emerald cut blue zircon looking for it's next home. If you feel a sparkle of excitement seeing this gem and want to design a one of a kind piece of jewelry, let us know!
...
Category
2010s Modern North American Loose Gemstones
Materials
Zircon, Blue Zircon
Sparkling 5.15 Carat Blue Zircon Gemstone Pear 10x7mm
Located in Columbus, OH
A gorgeous pear shape blue zircon looking for it's next home. If you feel a sparkle of excitement seeing this gem and want to design a one of a kind piece of jewelry, let us know!
C...
Category
2010s Modern North American Loose Gemstones
Materials
Zircon, Blue Zircon
GIA 10.07 Carat Natural Yellow Cushion Shape Diamond
Located in Great Neck, NY
GIA fancy yellow cushion shape diamond weighing 10.07 carats.
Treated Clarity
Category
2010s North American Loose Gemstones
Materials
Diamond, Yellow Diamond, 14k Gold, White Gold
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 arr...
Category
2010s North American Loose Gemstones
Materials
Fire Opal
18 Carat Natural Fire Opal Pear, Fancy Opal, October Birthstone, Orange Gemstone
Located in New York, NY
DETAILS
Fire Opal Weight: 18.19 CT
Measurements: 23.4 x 18.1 mm
Shape: Pear
Color: Intense Orange
Hardness: 5.5 - 6.5
Birthstone Month: October
Natural
SHIPPING
All items will be sh...
Category
21st Century and Contemporary Artisan North American Loose Gemstones
Materials
Opal, Fire Opal
21.80 Carat Natural Yellow Diamond Crystal
Located in New York, NY
This large natural single yellow diamond crystal weighs 21.80 carats and comes out of Canada. It has a beautiful natural luster and complex texture.
Dimensions: 13mmW x 11mmD x 14mm...
Category
2010s North American Loose Gemstones
Materials
Yellow Diamond
9.13 Carats Natural Cornflower Blue Sapphire Oval Cut Loose Gem
Located in Great Neck, NY
9.13 CTS NATURAL CORNFLOWER BLUE OVAL CUT GENUINE SAPPHIRE LOOSE GEM
STANDARD HEAT ONLY TREATEMENT, GORGEOUS COLOR AND SIZE
MEASUREMENTS 10.70mm X 12.20mm
*FREE SHIPPING WITHIN THE...
Category
2010s North American Loose Gemstones
Materials
Sapphire, Blue Sapphire
9.5 carat Fire Opal Lot
Located in Ciudad De México, MX
Lot of Loose Gemstones (7 pieces)
9.50 Carat in total
Oval, marquise and brilliant cut stones
Fire Opal
Different colored opals, ranging from red, orange and yellow.
The biggest st...
Category
2010s North American Loose Gemstones
Materials
Opal, Fire Opal
GIA Certified 4.26 Carat No Heat Oval Ruby
Located in Great Neck, NY
GIA Certified No Heat oval Ruby weighing 4.26 carats
Measuring (10.87x8.40x4.80) mm
Color: Red
No indications of heating
Category
2010s Modern North American Loose Gemstones
Materials
Ruby
5.6 carat Opal lot (12 pieces)
Located in Ciudad De México, MX
Lot of Loose Gemstones (12 pieces)
5.60 Carat in total
Cabochon cut stones
Fire Opal
Different colored opals, ranging from red, orange and yellow.
The biggest stone has the dimenti...
Category
2010s North American Loose Gemstones
Materials
Opal, Fire Opal
101.40 Carat Kunzite
Located in New York, NY
This huge over-100 carat kunzite is internally flawless and drenched in pink from the manganese content of the stone. Out of California, it will make a show-stopping piece of jewelry.
From the Pala Chief Mine in San Diego County, California, this 101.40 carat cushion cut kunzite...
Category
2010s North American Loose Gemstones
Materials
Kunzite
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 North American Loose Gemstones
Materials
Black Diamond
Oscar Heyman Multicolor Sapphire Necklace Layout, 114.79 Carats
By Oscar Heyman
Located in New Orleans, LA
This stunning Oscar Heyman multicolor sapphire necklace layout affords a remarkable opportunity to personally collaborate with the legenda...
Category
21st Century and Contemporary Modern North American Loose Gemstones
Materials
Diamond, Sapphire
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 North American Loose Gemstones
Materials
Black Diamond
27.03 Carat Salt and Pepper Diamond Crystal
Located in New York, NY
This natural diamond single crystal out of Canada weighs 27.03 carats and has salt and pepper coloration due to natural inclusions in the crystal lattice structure. It displays beaut...
Category
2010s North American Loose Gemstones
Materials
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 North American Loose Gemstones
Materials
Black 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 North American Loose Gemstones
Materials
White 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 North American 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 North American Loose Gemstones
Materials
Black Diamond
Rose Cut Diamond Studs
Located in Missoula, MT
An alternative to the regular diamond stud, just as elegant but a little more relaxed.
-14k Yellow Gold
-2, 4mm Rose Cut Diamonds
-0.25 carats total
-bezel setting
Category
2010s Modern North American Loose Gemstones
Materials
Diamond, 14k Gold
13.50 carat Yellow Opal
Located in Ciudad De México, MX
Loose Gemstone
13.50 Carat
16.7 x 17 x 11.5 mm
Fire Opal
Yellow Opal unusual smooth cut.
We can customize a ring or piece of jewelry for you, we are a jewelry desgin studio locate...
Category
2010s North American Loose Gemstones
Materials
Opal, Fire Opal
GIA Certified 1.51 Carat Vivid Earth Mined Pink Diamond Brilliant Oval Cut 8x6mm
Located in Columbus, OH
We are thrilled to bring you this absolutely gorgeous pink natural earth mined diamond! This diamond is HPHT treated, giving it a stunning Fancy Vivid Pink color. A fabulous size for an engagement ring or statement piece that is sure to turn heads. This gemstone is also a great investment as natural diamonds appreciate...
Category
2010s Modernist North American Loose Gemstones
Materials
Diamond, Pink Diamond
GIA Certified VS2 2 Carat Orangy Pink Earth Mined Diamond Brilliant Oval 9x7mm
Located in Columbus, OH
We are so excited to bring you this gorgeous GIA certified 2 carat natural earth mined orangy pink diamond! This piece is HPHT treated giving it an absolutely gorgeous fancy vivid co...
Category
2010s Modernist North American Loose Gemstones
Materials
Diamond, Pink Diamond
GIA Certified 1 Carat Purplish Pink Diamond Earth Mined Brilliant Round 6.5mm
Located in Columbus, OH
We are thrilled to bring you this absolutely gorgeous pink natural earth mined diamond! This diamond is HPHT treated, giving it a stunning fancy vivid purplish pink color. A fabulous size for an engagement ring or statement piece that is sure to turn heads. This gemstone is a great investment as natural diamonds appreciate...
Category
2010s Modernist North American Loose Gemstones
Materials
Pink Diamond
GIA Certified 2.31 Carat VVS1 Fancy Deep Pink Diamond Natural Earth Mined
Located in Columbus, OH
We are thrilled to bring you this absolutely gorgeous pink natural, earth-mined diamond! This diamond is HPHT treated, giving it a stunning Fancy Deep Pink color. A fabulous size for an engagement ring or statement piece that is sure to turn heads. This gemstone is also a great investment as natural diamonds appreciate...
Category
2010s Modernist North American Loose Gemstones
Materials
Diamond, Pink Diamond
GIA Certified 1.07 Carat Deep Pink Diamond Earth Mined Brilliant Round 6.5x4mm
Located in Columbus, OH
We are thrilled to bring you this absolutely gorgeous pink natural earth mined diamond! This diamond is HPHT treated, giving it a stunning Fancy Deep Pink color. A fabulous size for an engagement ring or statement piece that is sure to turn heads. This gemstone is also a great investment as natural diamonds appreciate...
Category
2010s Modernist North American Loose Gemstones
Materials
Diamond, Pink Diamond
GIA Certified 1 Carat Purplish Pink Diamond Earth Mined Brilliant Round 6.5mm
Located in Columbus, OH
Specifications
Stone: Diamond (Natural Earth Mined )
Treatment: HPHT
Color: Purplish Pink
Cut: Brilliant
Clarity: VS2
Carat Weight: 1.00 carat
Shape: Round
Size: 6.5mm (depth is 3.8...
Category
2010s Modernist North American Loose Gemstones
Materials
Diamond, Pink Diamond
GIA Certified 2 Carat VVS2 Deep Purplish Pink Diamond Earth Mined Brilliant 8mm
Located in Columbus, OH
We are thrilled to bring you this absolutely gorgeous pink natural earth mined diamond! This diamond is HPHT treated, giving it a stunning purplish pink color. A fabulous size for an engagement ring or statement piece that is sure to turn heads. This gemstone is a great investment as natural diamonds appreciate...
Category
2010s Modernist North American Loose Gemstones
Materials
Diamond, Pink Diamond
GIA Certified 1.58 Carat Fancy Vivid Pink Diamond Natural Earth Mined
Located in Columbus, OH
We are thrilled to bring you this absolutely gorgeous pink natural earth mined diamond! This diamond is HPHT treated, giving it a stunning Fancy Vivid Pink color. A fabulous size for an engagement ring or statement piece that is sure to turn heads. This gemstone is also a great investment as natural diamonds appreciate...
Category
2010s Modern North American Loose Gemstones
Materials
Diamond, Pink Diamond
23.19 ct Square Ametrine
Located in Toronto, Ontario
Description:
Item Description: One Loose Stone
Weight: 23.19 cts
Measurements: 18.11x16.94x9.06 mm
Shape: Square
Vernacular Shape: Step Cut
Cutting Style Crown: Brilliant Cut
Cuttin...
Category
2010s Contemporary North American Loose Gemstones
Materials
Amethyst, Citrine
GIA Certified No Heat Oval Natural Ruby Weighing 1.18 Carats Gemstone
By OGI Ltd
Located in New York, NY
Introducing the Exquisite GIA Certified No Heat Oval Natural Ruby Weighing 1.18 Carats
Elevate your jewelry collection with this stunning and rare GIA Certified No Heat Oval Natural ...
Category
20th Century Contemporary North American Loose Gemstones
Materials
Ruby
Alexandrite GIA Certified Natural Color Change Blue Green Purple
Located in New York, NY
00This stunning alexandrite gemstone has been certified by GIA and boasts a natural color change effect from blue to green to purple depending on the lighting. The transparency of th...
Category
2010s North American Loose Gemstones
Materials
Alexandrite
GIA 22.08ct Natural Citrine Light Yellow Lemon Quartz Emerald Step Cut
Located in New York, NY
Citrine - Stone of Happiness.
This November birthstone is the beautiful transparent light yellow variety of quartz, often called "Lemon Quartz". Citrine has been a popular gemstone ...
Category
2010s North American Loose Gemstones
Materials
Citrine, Quartz
Vintage Jim Kaufman Intarsia - 1980s - Signed and Numbered
Located in Methuen, MA
This is the LAST piece of Intarsia from the Lapidary Artist Jim Kaufman - no longer doing this work; was being done in the 1980s, perhaps early 1990s. We have had several pieces over the 43 years we have been in business. Last one....because his work is no longer available and difficult to find/obtain, we know that we will never have any more in inventory once this is sold! :-(
--> We are offering this on SALE for 20% less. Ideally, we wanted to mark this at 10% off but that is not an option for a sale item on 1stdibs. The reason behind that is at 20% we make no profit after having this in inventory for approx 35 years!
Lapidary Artist Jim Kaufman hasn't done this type of work that we know of for about 40 years! This is the LAST piece of Intarsia by him that we have in the All That Glitters Collection and that we will ever possess - there will be NO more. Don't miss out!
Jim Kaufman, a very well-known artist in lapidary in the 1980s, this piece hails from about that timeframe
and has been stored in our vaults since that timeframe. Brand New - Never Worn - Never had an owner.
This is something that comes from a wonderful time in the gemstone/lapidary trade - and his work is very
collectable and we don't believe he has been doing any of this work since that timeframe.
This particular piece consists of the following, going from the outside to the center:
Rhodochrosite
Turquoise
Sugilite
Opal (Natural)
Fire Agate
Signed and Numbered on the back: "JK V45"
Some of his pieces have come up to well known auction houses at times - such as Bonhams.
We are quoting Bonhams below for the biography of Jim Kaufman when one of his pieces came up for
auction at one of their auction houses:
James Kaufman
Born in New York City in 1950, Jim Kaufman lived much of his life in New Jersey before moving to Sedona, Arizona where he presently resides. After serving a stint in the Army, he set up a rock shop and taught himself lapidary work that later became his forte. His inlay work has been influential on the work of many artists, including that of Nicolai Medvedev...
Category
1980s Contemporary Vintage North American Loose Gemstones
Materials
Opal, Turquoise, Fire Agate, Rhodocrosite
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