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20th Century Loose Gemstones

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Period: 20th Century
Top Grade Natural Icy Type Imperial Green Halo Donut Jadeite Jade Loose Stone
Located in Kowloon, HK
Immerse yourself in the captivating beauty of this stunning natural imperial green jade donut pendant. Crafted from the finest Type-A Myanmar jadeite jade, this pendant is a true mas...
Category

Hong Kong Art Deco 20th Century Loose Gemstones

Materials

Jade

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

Loose Oval Australian Opal Gemstone
Located in Towson, MD
This striking loose oval Australian opal measures 11.59 x 15.45 mm with a depth of 3.49 mm, and weighting 0.76 grams, showcases a mesmerizing play-of-color across its broad face. Min...
Category

Australian Contemporary 20th Century Loose Gemstones

Materials

Opal

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

AGL Certified Gemstone Natural Corundum Pink Sapphire Weighing 2.92 Carats
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

Sri Lankan Contemporary 20th Century Loose Gemstones

Materials

Pink Sapphire

GIA Certified Carved Colombia Emerald Loose Stone Weighing 4.35 Carats
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

Colombian Contemporary 20th Century Loose Gemstones

Materials

Emerald

GIA Certified No Treatment Octagonal Natural Quartz Citrine Weighing 42.43 Carat
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 20th Century Loose Gemstones

Materials

Citrine, Quartz

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 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

Colombian Contemporary 20th Century Loose Gemstones

Materials

Emerald

Beauteous 4.10 Carats Natural Green Loose Emerald Zambia Mine Ring Jewellery
Located in Peshawar, PK
Loose Emerald Weight: 4.10 Carats Dimension: 9.3x9.1x6.5 Mm Origin: Zambia Color: Green Certificate: On Customer Demand Treatment: Non . Zambia, often referred to as the "Jewel of ...
Category

Zambian Arts and Crafts 20th Century Loose Gemstones

Materials

Emerald, Beryl

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 Loose Gemstones

Materials

Quartz

GIA Certified Old-Mine Cut Loose Diamond 1.08ct
Located in Laguna Beach, CA
1.08 carat old-mine cut diamond. GIA graded E color, VS1 clarity. GIA grading report number is 1236538153. Comes with a full certificate.
Category

20th Century Loose Gemstones

Materials

Diamond

Hakimoto by Jewel Of Ocean 17.7 mm Special Gem Quality Round South Sea Pearl
Located in Hicksville, NY
Hakimoto By Jewel Of Ocean Round South Sea Pearl 17.7 mm Special 7.7 Grams Scecial Color South Sea Pearl Approximate
Category

American Modern 20th Century Loose Gemstones

Materials

Cultured Pearl, South Sea Pearl

Antique Cushion-Cut Diamond – 2.47ct
Located in Berlin, BE
Natural Antique Cushion-Cut Diamond – 2.47ct A 2.47-carat natural diamond in an antique round cushion cut. Color: K, Clarity: VVS2, with medium fluorescence. A visible fracture filli...
Category

German Aesthetic Movement 20th Century Loose Gemstones

Materials

Diamond

GIA Certified Pear Shaped Loose Diamond 2.07ct
Located in Laguna Beach, CA
2.07 carat pear shape brilliant diamond. GIA graded I color, I1 clarity, symmetry good. GIA report number is 2231570124. The diamond has a nice shape and faces up brilliantly. Comes ...
Category

20th Century Loose Gemstones

Materials

Diamond

Georg Jensen Sterling Silver Acorn Set Dinner Flatware Set 67 Pieces New
Located in New York, NY
This Georg Jensen Acorn flatware collection was introduced in 1915 and has become one of the brand’s most iconic designs. Created by Danish silversmith Georg Jensen, the collection f...
Category

Modern 20th Century Loose Gemstones

Materials

Other

Plat /18kt Yellow Gold Diamond .45ct. Moon Pendant
Located in New York, NY
Thia 18 karat yellow gold pendant is crafted in a sand blasted finish. The pendant is designed with a texture to give the feel of the moon's craters. A platinum crescent set with 0.4...
Category

American Retro Vintage 20th Century Loose Gemstones

Materials

Diamond, Platinum, Yellow Gold, 18k Gold

GIA Certified - 8.19ct Cusion Brilliant diamond
Located in Ramat Gan, IL
**GIA Certified 8.19ct Cushion Brilliant Diamond** Discover timeless elegance with this exquisite 8.19-carat Cushion Brilliant diamond. Certified by the Gemological Institute of Ame...
Category

American Art Deco 20th Century Loose Gemstones

Materials

Diamond

Hand Carved Natural Orange-Red Coral Rose Ornament
Located in Pasadena, CA
This exquisite ornament features natural orange-red coral, intricately hand-carved into the shape of a blooming rose—an enduring symbol of beauty and love. It measures approximately ...
Category

Taiwanese Artisan Vintage 20th Century Loose Gemstones

Materials

Coral

NEW HUGE GORGEOUS Natural Certified Pink Orange Coral 50.65 Carats
Located in Warren, NJ
Introducing an exquisite gemstone that will leave you in awe! This gorgeous coral boasts a vivid pink orange color with a stunning oval shape, weighing 50.65 carats and comes with ce...
Category

20th Century Loose Gemstones

Materials

Coral

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

GIA Certified Jadeite, Diamond, and Amethyst Snuff Bottle Ornament
Located in Pasadena, CA
The natural translucent green and brown color of Jadeite is carved as snuff bottle, surmounted by numerous near colorless round brilliant diamonds. The piece is completed with a natu...
Category

Taiwanese Artist 20th Century Loose Gemstones

Materials

Amethyst, Diamond

1.51 Carat Loose Padparadscha Sapphire, Cushion Cut GIA Graded Solitaire
Located in Greensboro, NC
Shape/Cut: Cushion Color: Orangy Pink Treatment: Heating Dimensions (mm): 6.76 x 5.73 x 4.13 Weight: 1.51ct GIA Report Number: 2195828370 Please check out the enlarged pictur...
Category

Unknown 20th Century Loose Gemstones

Materials

Sapphire

GIA Certified 3.02 Carat Princess Cut Natural Diamond
Located in Coral Gables, FL
Loose 3.02 Carat Princess Cut Diamond GIA Graded (Report #10155902) As I Color and VS2 Clarity.
Category

20th Century Loose Gemstones

Materials

Diamond

Diamond clarity:(IF) internally flawless color: top wesselton 1.06ct
Located in Berlin, BE
diamond, a Brilliant cut gem with a weight of 1.06 carats. extraordinary qualities that define its exquisite beauty: Diamond Details: Shape: Brilliant Weight: 1.06 carats Clarity Grade: Internally Flawless...
Category

German Aesthetic Movement Vintage 20th Century Loose Gemstones

Materials

Diamond

Stunning 2.80 Carats Natural Loose Yellow Citrine Fancy Trillion Cut Ring Gem
Located in Peshawar, PK
Loose Citrine Weight: 2.80 Carats Dimension: 9.8x9.8x6.5 Mm Origin: Brazil Shape: Trillion Color: Yellow Treatment: Non Citrine, a radiant gemstone known for its warm golden hues,...
Category

Brazilian Arts and Crafts 20th Century Loose Gemstones

Materials

Citrine

Australian Loose Solid Oval Opal of 5.00ct (17mm x 11mm). Lightning Ridge.
Located in MELBOURNE, AU
This Australian Loose Solid Opal is of impressive 5.00ct (17mm x 11mm) from Lightning Ridge Displaying truly unique spectrum of colours, white-greyish toned body with striking fla...
Category

Australian Vintage 20th Century Loose Gemstones

Materials

Opal

GIA Certified Old European Cut 1.49ct J VS2 Diamond
Located in New York, NY
This stunning GIA-certified 1.49-carat Old European cut diamond features timeless vintage charm with modern assurance. Graded J color and VS2 clarity, the stone offers exceptional br...
Category

20th Century Loose Gemstones

Materials

Diamond

27.35 Carats Natural Loose Bicolor Tourmaline 24 Mm Long For Necklace Jewellery
Located in Peshawar, PK
Loose Bicolor Tourmaline Weight: 27.35 Carats Dimension: 24X12X10.7 Mm Origin: Kunar Afghanistan Shape: Emerald Color: Green & Peach Yello...
Category

Afghan Arts and Crafts 20th Century Loose Gemstones

Materials

Tourmaline, Multi-gemstone

11.50 Carat Enchanting Elegance Stunning Asscher Cut Green Amethyst Ring Gem
Located in Peshawar, PK
Faceted Green Amethyst Weight: 11.50 Carats Dimension: 14.5x11.7x9.9 Mm Origin: Brazil Shape: Emerald Cut/Facet: Asscher Color: Green Certificate: On Demand Green amethyst, als...
Category

Brazilian Arts and Crafts 20th Century Loose Gemstones

Materials

Amethyst

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

Hakimoto by Jewel of Ocean Pair of 17.5mm White Round Australian South Sea Pearl
Located in Hicksville, 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

Hakimoto By Jewel Of Ocean Pair of 18 mm White Round Australian South Sea Pearl
Located in Hicksville, 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

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

Brazilian 20th Century Loose Gemstones

Materials

Alexandrite

5.75 Cts Natural Loose Citrine Emerald Shape Gemstone
Located in Peshawar, PK
Loose Citrine Weight: 5.75 Carats Dimension: 12x9.5x7.6 Mm Origin: Brazil Shape: Emerald Color: Yellow Treatment: Non Certificate: On Demand Citrine is a vibrant and sunny gemst...
Category

Brazilian Arts and Crafts 20th Century Loose Gemstones

Materials

Citrine

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

Matching Pair of 4ct Each Old Europoean Diamonds
Located in Ramat Gan, IL
Matching Pair of 4ct Each Old European Diamonds** Discover the timeless elegance of this **matching pair of 4-carat each Old European cut diamonds**—an extraordinary find for collec...
Category

20th Century Loose Gemstones

Materials

Diamond

GIA Certified 1.28 Ct Emerald Cut G VVS2 Loose Diamond 7.48 x 5.32 x 3.70 mm
Located in New York, NY
GIA REPORT NUMBER: 2235024336 Shape:Emerald Cut Measurements:7.48 x 5.32 x 3.70 mm Carat Weight:1.28 carat Color Grade:G Clarity Grade:VVS2 Depth:69.5% Table:75% Girdle:Extremely Thi...
Category

20th Century Loose Gemstones

Materials

Diamond

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 Green Jadeite Gemstone. 4.28 Carat with an excellent oval cabochon cut ...
Category

20th Century Loose Gemstones

Materials

Jade

10.34ct Antique Cushion ! a collectors dream!
Located in Ramat Gan, IL
10.34ct Antique Cushion Diamond – A Timeless Masterpiece Indulge in the brilliance of history with this breathtaking **10.34-carat Antique Cushion-Cut Diamond**. Showcasing a classi...
Category

North American Art Deco 20th Century Loose Gemstones

Materials

Diamond

5.40 Carat Radiant Cut G-VS2 Diamond Platinum Eternity Band Ring
Located in New York, NY
Title: 5.40 Carat Radiant Cut G-VS2 Diamond Platinum Eternity Band Ring Style: Eternity Band Metal: Platinum Gemstone 1: 4.5 Carat Diamond Number of Stones: 18 Shape: Radiant Cut Siz...
Category

20th Century Loose Gemstones

Materials

Diamond

Large Natural Citrine Gemstone W Arabic Script In Box
Located in New York, NY
A large natural citrine gemstone with curved Arabic script on both sides. The gemstone features a faceted surface that enhances its brilliance, and it is elegantly displayed in a bla...
Category

Unknown 20th Century Loose Gemstones

Materials

Citrine, Sterling Silver

Hakimoto by Jewel Of Ocean Pair of 17 mmWhite Round Australian South Sea Pearl
Located in Hicksville, 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

GIA Certified Round Brilliant Cut Loose Diamond 1.78ct
Located in Laguna Beach, CA
GIA graded 1.78 carat round brilliant cut diamond. M color, slightly yellow. The clarity is i1 with an inclusion well hidden under the crown facets. The di...
Category

20th Century Loose Gemstones

Materials

Diamond

Vintage Carved Angel Skin Coral Siren Mermaid Figurine Sculpture
Located in New York, NY
A charming coral sculpture. Crafted from coral, this piece depicts a serene mermaid with flowing hair and a gentle smile. The mermaid's tail is intricately detailed with scales, lead...
Category

20th Century Loose Gemstones

Materials

Coral

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

Natural loose 1.45 Carat H I1 Round Brilliance Diamond
Located in New York, NY
ITEM DESCRIPTION ID #:NYC57483 Stone Shape:Round Brilliance Diamond Weight:1.45 carat Clarity:I1 Color:H Cut: Round Measurements: 6.91 x 6.93 x 4.49 mm Appraisal Value:$2698.00 Our...
Category

20th Century Loose Gemstones

Materials

Diamond

42.82 Carat Old European Diamond Layout – GIA Certified
Located in Ramat Gan, IL
Exceptional 42.82 Carat Old European Diamond Layout – GIA Certified An extraordinary collection of 19 Old European cut diamonds, totaling an impressive 42.82 carats. This meticulous...
Category

European 20th Century Loose Gemstones

Materials

Diamond

Vintage Carved Salmon Coral Siren Mermaid Figurine Sculpture
Located in New York, NY
An exquisite coral carving featuring a mermaid design. This captivating piece is crafted from salmon coral, showcasing intricate details that bring the mermaid to life. The mermaid's...
Category

20th Century Loose Gemstones

Materials

Coral

Superb vintage hand carved “Peony Floral Spray” natural color Momo coral plaque
Located in New York, NY
A superb, vintage, hand carved “Peony Floral Spray” natural color Momo coral plaque. The one of a kind oval plaque is intricately carved and fantastically detailed and the color is e...
Category

Unknown Contemporary 20th Century Loose Gemstones

Materials

Coral, Sterling Silver

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 v...
Category

20th Century Loose Gemstones

Materials

Spinel

10.4 ct. Flower Marquise Sky Blue Topaz Fantasy Cut 16X12 Floral
Located in Warren, NJ
The product is a 10.4 ct. fantasy cut sky blue topaz gemstone in the shape of a marquise. This gemstone is specifically cut in a floral pattern, giving it a unique and elegant design...
Category

Vintage 20th Century Loose Gemstones

Materials

Topaz, Blue Topaz

1.61 Carat Loose Sapphire, Oval Orange Pink AGL Graded Solitaire
Located in Greensboro, NC
Shape/Cut: Oval Color: Orange Pink Dimensions (mm): 7.09 x 6.17 x 4.59 Weight: 1.61ct Treatment: No Heat AGL Report Number: GB 1087001 Please check out the enlarged pictures...
Category

Unknown 20th Century Loose Gemstones

Materials

Sapphire

19.51ct Star Sapphire Ring Sz. 8
Located in Scottsdale, AZ
19.51ct Star Sapphire Ring Sz. 8 This captivating 19.51ct oval star sapphire ring is set in 950 palladium and accented with 0.50ctw of round brilliant diamonds. Complete with an AGL...
Category

20th Century Loose Gemstones

Materials

Blue Sapphire, Star Sapphire

Loose Peridot - Cushion cut - 62.50ct
Located in SYDNEY, AU
A loose deep green Peridot, of cushion cut, and 62.50cts. This stone is available to be set into the piece of your choice or kept to be admired on its own.
Category

20th Century Loose Gemstones

Materials

Peridot

3.24 Carat Loose Green Sapphire, Round Cut Solitaire
Located in Greensboro, NC
Shape/Cut: Round Color: Green Treatment: Heating Diameter (mm): 8.9 Weight: 3.24ct Please check out the enlarged pictures. Thank you for taking the time to read our description...
Category

Unknown 20th Century Loose Gemstones

Materials

Green Sapphire

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

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

Garnet, Rhodolite

17.86 Carat Loose Tourmaline Gemstone, Genuine Green Rectangular
Located in Greensboro, NC
This gemstone has lovely green color and an attractive rectangular cut. It would make a most excellent addition to a collection or jewelry mount! Please check out our enlarged photog...
Category

Unknown 20th Century Loose Gemstones

Materials

Tourmaline

1.12 Carat Loose Diamond, Cushion Cut GIA Graded I1 L Solitaire
Located in Greensboro, NC
Shape/Cut: Cushion Clarity: I1 Color: L Dimensions (mm): 5.84 x 5.62 x 3.88 Weight: 1.12ct GIA Report Number: 2193793328 Please check out the enlarged pictures. Thank you for...
Category

Unknown 20th Century Loose Gemstones

Materials

Diamond

Hakimoto Pair of 14 mm Pink Botton Shape Cultured Pearls
Located in Hicksville, 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

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