Early 20th Century Loose Gemstones
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Period: Early 20th Century
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
Malagasy Contemporary Early 20th Century Loose Gemstones
Materials
Citrine, Quartz
Antique Vintage Islamic Carved Jade Calligraphy Seals
Located in New York, NY
A group of six antique and vintage Islamic carved jade seals adorned with Arab calligraphy. Each seal bears intricate carvings of Arabic script, showcasing the beauty and precision o...
Category
Unknown Early 20th Century Loose Gemstones
Materials
Jade, Sterling Silver
Antique Marquise Cut Diamond 2.19ct True Old Natural Diamond KL VS-SI1
Located in Overland Park, KS
Listed is a very tough to find antique marquise cut natural diamond. This is a true old stone, bruted girdle (not polished...showing its age), open culet and older faceting. The diam...
Category
Art Deco Early 20th Century Loose Gemstones
Materials
Diamond
HRD Certified 1.03ct Old-European Cut Diamond
Located in Esch sur Alzette, Esch-sur-Alzette
The HRD Certified 1.03ct Old-European Cut Diamond is a captivating gemstone known for its vintage charm and timeless beauty.
This diamond boasts a weight of 1.03 carats, making it a...
Category
European Art Deco Early 20th Century Loose Gemstones
Materials
Diamond
Round Brilliant Cut Loose Diamond 0.94 ct
Located in Laguna Beach, CA
Loose .94 carat round brilliant cut
No grading certificate.
Grading is done by a GIA graduate gemologist.
The color is H to i color, Si to i1 clarity.
There is a small feather under ...
Category
Early 20th Century Loose Gemstones
Materials
Diamond
5.65 Carats Natural Loose Citrine CAN Shape Ring Gem
Located in Peshawar, PK
Loose Citrine
Weight: 5.65 Carats
Dimension: 12.1x9.3x7.6 Mm
Origin: Brazil
Color: Yellow
Treatment: Non
Certificate: On Demand
Citrine, a radiant and vibrant gemstone, is prized f...
Category
Brazilian Art Deco Antique Early 20th Century Loose Gemstones
Materials
Citrine
20.30 Carats Natural Loose Lime Yellow Citrine Round Cut for Necklace Jewelry
Located in Peshawar, PK
Faceted Citrine
Weight: 20.30 Carats
Dimension: 19.1x19.1x10.8 Mm
Origin: Brazil
Color: Yellow
Shape: Round
Certificate; On Customer Demand
.
Citrine, a gemstone of warm and ra...
Category
Brazilian Artist Early 20th Century Loose Gemstones
Materials
Citrine
LFG Certified 2.12 J/VVS2 Antique Old Mine Cushion Brilliant Cut Diamond
Located in Paris, FR
This Antique Old Mine Cushion Brilliant cut Diamond weights 2.12 carats with a J color (Beautiful white face up) and VVS2 Clarity (Loupe Clean).
The high quality of its cut let the s...
Category
Unknown Belle Époque Vintage Early 20th Century Loose Gemstones
Materials
Diamond
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 Clarit...
Category
Colombian Contemporary Early 20th Century Loose Gemstones
Materials
Emerald
GIA Certified No Heat Pear Shape Carving Natural Sapphire Weighing 4.70 Carats
By OGI Ltd
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 Early 20th Century Loose Gemstones
Materials
Sapphire
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 Early 20th Century Loose Gemstones
Materials
Diamond
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 Early 20th Century Loose Gemstones
GIA Certified 5231058396 No Heat Red Burma Cabochon Ruby 4.63 Carats
By OGI Ltd
Located in New York, NY
GIA Certified 5231058396 No Heat Red Burma Cabochon Ruby 4.63 Carats
Discover the exquisite beauty of this GIA certified No Heat Red Burma Cabochon Ruby, a rare gemstone that boasts ...
Category
Burmese Contemporary Early 20th Century Loose Gemstones
Materials
Ruby
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Sparkling 1pc Natural Diamond w/ 0.71 Ct Round Brilliant G SI1 GIA Certificate
Located in רמת גן, IL
One glittering round brilliant cut natural diamond in a 0.71 carat G SI1 with triple very good cut, polish, and symmetry. This diamond comes with GIA Certificate and laser inscriptio...
Category
Israeli Early 20th Century Loose Gemstones
Materials
Diamond
Certified Unheated Blue Sapphire Ring Gem 1.25 Carat Oval Gemstone Ceylon Origin
Located in Makola, LK
Ceylon Unheated Blue Sapphire 1.25 Carats.
• Variety: Sapphire
• Origin: Sri Lanka (Ceylon)
• Color(s): Blue
• Shape/Cutting Style: Oval
• Dimensions: 8.3mm x 6.1mm x 5.2mm
• Calib...
Category
Sri Lankan Early 20th Century Loose Gemstones
Materials
Sapphire, Blue Sapphire, Purple Sapphire
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W 0.24 in D 0.21 in L 0.33 in
Natural Green Zircon Gemstone 1.50 Carat Ceylon Origin
Located in Makola, LK
Natural Green Zircon 1.50 Carats unheated come with a rich Green color and luster and perfect cut, unheated
• Variety: Zircon
• Origin: Sri Lanka (Ceylon)
• Color(s): Green
• Shape...
Category
Sri Lankan Early 20th Century Loose Gemstones
Materials
Zircon
Alexander HRD Certified 10.03 Carat Emerald Cut Diamond
Located in BEVERLY HILLS, CA
Stunning loose emerald cut diamonds, HRD certified.
Sold as loose diamond but can easily be made into a ring of your liking. Crafted by some of the most ...
Category
Modern Early 20th Century Loose Gemstones
Materials
Diamond
GIA Certified Natural Alexandrite 0.56 Carats
Located in Los Angeles, CA
We're glad to share with you the certificate of GIA report. With this, you can be sure that the gem you purchased is a genuine natural Alexandrite 0.56 carats. GIA Report states that...
Category
Unknown Early 20th Century Loose Gemstones
Materials
Alexandrite
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
American Early 20th Century Loose Gemstones
Materials
Opal
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
North American Early 20th Century Loose Gemstones
Materials
Citrine, Quartz
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
American Modern Early 20th Century Loose Gemstones
Materials
Sapphire
GIA Certified Natural Alexandrite 2.06 Carats
Located in Los Angeles, CA
Are you looking for a natural jewel? What’s your favorite color? Why not have one-of-a-kind gems, just like this natural alexandrite gemstone. Check out this gorgeous natural gem 2.0...
Category
Unknown Early 20th Century Loose Gemstones
Materials
Alexandrite
Aquamarine Heart Shape Gem 8.39 Carat Loose Stone
Located in Valenza , IT
Loose aquamarine in heart shape, mixed cut.
The aquamarine weights is 8.39 carats. Origin Brazil.
Very good faceted cut.
On request we provide a gemological certificate.
Please not...
Category
Italian Modern Early 20th Century Loose Gemstones
Materials
Aquamarine
Aquamarine Gemstone Ring 4.60 Carat Loose Unmounted Pear Shape Gem
By Tamir
Located in Beverly Hills, CA
Classic 4.60 carat pear shape Aquamarine loose gemstone, offered unmounted to a sophisticated gemstone lover.
Dimensions: 13.6 x 9.4 x 6.2 mm.
Returns are accepted and paid by us wit...
Category
Mozambican Contemporary Early 20th Century Loose Gemstones
Materials
Aquamarine, Beryl
Free Shipping
W 0.38 in D 0.25 in L 0.54 in
Fine Deep Green Blue GIA Certified 1.03ct Unheated Sapphire Oval Cut Untreated
Located in Birmingham, GB
Fine Blue Green Untreated Sapphire Gemstone.
Fine quality unheated sapphire with a beautiful vivid blue green colour.
Fully certified by GIA confirming stone as natural and untreat...
Category
Early 20th Century Loose Gemstones
Materials
Sapphire, Blue Sapphire, Green Sapphire
Previously Available Items
GIA Certified 5231058396 No Heat Red Burma Cabochon Ruby 4.63 Carats
By OGI Ltd
Located in New York, NY
GIA Certified 5231058396 No Heat Red Burma Cabochon Ruby 4.63 Carats
Discover the exquisite beauty of this GIA certified No Heat Red Burma Cabochon Ruby, a rare gemstone that boasts ...
Category
Burmese Contemporary Early 20th Century Loose Gemstones
Materials
Ruby
Free Shipping
W 0.36 in D 0.23 in L 0.38 in
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