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Early 20th Century Loose Gemstones

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Period: Early 20th Century
GIA Certified 53.64ct Oval Carved Double Cabochon Emerald, Green
GIA Certified 53.64ct Oval Carved Double Cabochon Emerald, Green

GIA Certified 53.64ct Oval Carved Double Cabochon Emerald, Green

Located in New York, NY

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 gr...

Category

Colombian Contemporary Early 20th Century Loose Gemstones

Materials

Emerald

GIA Certified 5.32ct Natural Blue Star Sapphire with Asterism
GIA Certified 5.32ct Natural Blue Star Sapphire with Asterism

GIA Certified 5.32ct Natural Blue Star Sapphire with Asterism

By OGI Ltd

Located in New York, NY

Type: Natural Star Sapphire Weight: 5.32 Carats Measurements: 9.15 x 7.66 x 7.18 mm Transparency: Translucent Color: Blue Phenomenon: Displaying Asterism (Star Effect) GIA Report Num...

Category

Sri Lankan Contemporary Early 20th Century Loose Gemstones

Materials

Star Sapphire

GIA Certified No Treatment Octagonal Natural Quartz Citrine Weighing 42.43 Carat
GIA Certified No Treatment Octagonal Natural Quartz Citrine Weighing 42.43 Carat

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 Chinese Jade Snuff Bottle
Antique Chinese Jade Snuff Bottle

Antique Chinese Jade Snuff Bottle

Located in New York, NY

Antique Chinese Jade Snuff Bottle. This unique piece features intricate carvings on a smooth, natural brown jade surface. The stone is polished to a soft sheen, highlighting its orga...

Category

Early 20th Century Loose Gemstones

Materials

Jade

LFG Certified 3.78 K/VS1 Antique Old European Round Brilliant Cut Diamond
LFG Certified 3.78 K/VS1 Antique Old European Round Brilliant Cut 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 Early 20th Century Loose Gemstones

Materials

Diamond

42.82 Carat Old European Diamond Layout – GIA Certified
42.82 Carat Old European Diamond Layout – GIA Certified

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 Early 20th Century Loose Gemstones

Materials

Diamond

Antique Hardstone Intaglio - Unset Gemstone - Europe - Early 20th Century
Antique Hardstone Intaglio - Unset Gemstone - Europe - Early 20th Century

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

Certified Natural Green Jadeite Carvings Matched Pair (Untreated Type A Jadeite)
Certified Natural Green Jadeite Carvings Matched Pair (Untreated Type A Jadeite)

Certified Natural Green Jadeite Carvings Matched Pair (Untreated Type A Jadeite)

Located in New York, NY

A refined and highly collectible pair of natural green jadeite carvings, offered loose and unset, showcasing the purity and integrity prized in fine jade. These stones are certified ...

Category

Hong Kong Artisan Early 20th Century Loose Gemstones

Materials

Jade

5.65 Carats Natural Loose Citrine CAN Shape Ring Gem
5.65 Carats Natural Loose Citrine CAN Shape Ring Gem

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
20.30 Carats Natural Loose Lime Yellow Citrine Round Cut for Necklace Jewelry

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

GIA-Certified 4.89 Carat Old European Brilliant Cut Diamond — L / SI1  None.
GIA-Certified 4.89 Carat Old European Brilliant Cut Diamond — L / SI1  None.

GIA-Certified 4.89 Carat Old European Brilliant Cut Diamond — L / SI1 None.

Located in Ramat Gan, IL

A truly exceptional antique-cut stone with rare character and presence. This impressive 4.89-carat Old European Brilliant is certified by the GIA (Report #2233708564, dated January 2...

Category

Early 20th Century Loose Gemstones

Materials

Diamond

Antique Carved Red Coral Rooster
Antique Carved Red Coral Rooster

Antique Carved Red Coral Rooster

Located in New York, NY

This striking sculpture captivates with its intricate design and vibrant red hue. Carved from a single piece of coral, it features a detailed rooster perched elegantly beside a textu...

Category

Early 20th Century Loose Gemstones

Materials

Coral

Round Brilliant Cut Loose Diamond 0.94 ct
Round Brilliant Cut Loose Diamond 0.94 ct

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 an outer crown facet...

Category

Early 20th Century Loose Gemstones

Materials

Diamond

1.01ct Asscher Cut Diamond- VVS2 Clarity, H colour GIA Certified
1.01ct Asscher Cut Diamond- VVS2 Clarity, H colour GIA Certified

1.01ct Asscher Cut Diamond- VVS2 Clarity, H colour GIA Certified

Located in Altrincham, GB

The Asscher Cut is one of my favourites, and this 1.01 carat stone is beautifully displays its gorgeous clean lines and sparkle with VVS2 clarity and H colour (GIA Certified)  which ...

Category

Vintage Early 20th Century Loose Gemstones

Materials

Diamond

Antique Floral Carved Mutton Fat Jade Vase on Wood Stand
Antique Floral Carved Mutton Fat Jade Vase on Wood Stand

Antique Floral Carved Mutton Fat Jade Vase on Wood Stand

Located in New York, NY

This elegant antique “mutton fat” jade vase is a refined example of traditional Chinese hardstone carving, beautifully complemented by its fitted carved wood stand. The vase is hand-...

Category

Early 20th Century Loose Gemstones

Materials

Jade

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Located in Kowloon, HK

Immerse yourself in the captivating beauty of this stunning natural tricolour jade doughnut pendant. Crafted from the finest Type-A Myanmar jadeite jade,...

Category

Hong Kong Arts and Crafts Early 20th Century Loose Gemstones

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Jade

New Sugarloaf Cabochon Jade Loose Gemstone, Designer Unknown, 2026
New Sugarloaf Cabochon Jade Loose Gemstone, Designer Unknown, 2026

New Sugarloaf Cabochon Jade Loose Gemstone, Designer Unknown, 2026

Located in Kowloon, HK

This 10.15ct Natural Type-A Myanmar Jadeite isn’t just a gemstone; it’s a fragment of the "highest etheric spectrum." Featuring a rare, architectural Sugarloaf Cut, this stone glows ...

Category

Hong Kong Artisan Early 20th Century Loose Gemstones

Materials

Jade

WHOLESALE VALUE, 2.22 Carat Round Shape Natural Diamond No treatments
WHOLESALE VALUE, 2.22 Carat Round Shape Natural Diamond No treatments

WHOLESALE VALUE, 2.22 Carat Round Shape Natural Diamond No treatments

Located in Great Neck Plaza, NY

2.22 Carat Round Shape Natural Diamond Average Color I , Clarity i3 Measurement 8.3 mm stone Nice cut Excellent shine and face-up

Category

American Early 20th Century Loose Gemstones

Materials

Diamond, 14k Gold, Yellow Gold

WEEK LONG CLEARANCE, 2.30 Carat Round Shape Natural Diamond No treatments
WEEK LONG CLEARANCE, 2.30 Carat Round Shape Natural Diamond No treatments

WEEK LONG CLEARANCE, 2.30 Carat Round Shape Natural Diamond No treatments

Located in Great Neck Plaza, NY

2.30 Carat Round Shape Natural Diamond Average Color H , Clarity i3 Measurement 8.3 mm stone Nice cut Excellent shine and face-up

Category

American Early 20th Century Loose Gemstones

Materials

Diamond, 14k Gold, Yellow Gold

GIA Certified Oval Brilliant Loose Diamond 1.48ct
GIA Certified Oval Brilliant Loose Diamond 1.48ct

GIA Certified Oval Brilliant Loose Diamond 1.48ct

Located in Laguna Beach, CA

1.48-carat oval brilliant cut diamond. GIA graded H color, Vs1 clarity. Measures 7.89 x 6.31 x 4.51mm The grading report number is 1226958994. Comes with the original grading certifi...

Category

Early 20th Century Loose Gemstones

Materials

Diamond

GIA Certified 1.01 Carat Old European Cut Natural Diamond
GIA Certified 1.01 Carat Old European Cut Natural Diamond

GIA Certified 1.01 Carat Old European Cut Natural Diamond

$5,280Sale Price|20% Off

H 0.14 in W 0.26 in L 0.26 in

GIA Certified 1.01 Carat Old European Cut Natural Diamond

Located in New York, NY

ITEM DESCRIPTION Stone Shape: Old European Diamond Weight: 1.01 Carat  Color: H Measurements: 6.51 x 6.53 x 3.45 mm Symmetry: Very Good Polish: Excellent Fluorescence: Medium Blue ...

Category

Modern Early 20th Century Loose Gemstones

Materials

Diamond

Hand-Carved Myanmar Jadeite Flower Set, 25.20 Ct Natural Jade
Hand-Carved Myanmar Jadeite Flower Set, 25.20 Ct Natural Jade

Hand-Carved Myanmar Jadeite Flower Set, 25.20 Ct Natural Jade

Located in Kowloon, HK

Transform your jewelry designs into wearable art with this exquisite set of Hand-Carved Myanmar Jadeite Flowers. This curated duo features a delicate green-and-white Camellia and a w...

Category

Hong Kong Art Nouveau Early 20th Century Loose Gemstones

Materials

Jade

GIA Certified 15.10 Carat D Flawless Pear Brilliant Diamond GIA
GIA Certified 15.10 Carat D Flawless Pear Brilliant Diamond GIA

GIA Certified 15.10 Carat D Flawless Pear Brilliant Diamond GIA

Located in Monaco, MC

In the hierarchy of natural diamonds, certain stones exist beyond category. This 15.10-carat pear brilliant is one of them — a stone that achieves the theoretical maximum of diamond ...

Category

Early 20th Century Loose Gemstones

Materials

Diamond

Natural Myanmar Jade Carved Pair Loose Stones, Green Jade Carvings
Natural Myanmar Jade Carved Pair Loose Stones, Green Jade Carvings

Natural Myanmar Jade Carved Pair Loose Stones, Green Jade Carvings

Located in Kowloon, HK

Elevate your jewelry designs with this beautiful carved jade pair loose stone set. Each piece features detailed green jade carving with natural character and an elegant, polished fin...

Category

Hong Kong Art Nouveau Early 20th Century Loose Gemstones

Materials

Jade

1.58 Carat Citrine Quartz
1.58 Carat Citrine Quartz

1.58 Carat Citrine Quartz

$127Sale Price|50% Off

W 0.29 in D 0.18 in L 0.36 in

1.58 Carat Citrine Quartz

Located in Hua Hin, TH

A fiery 1.58 carat Citrine Quartz imbued with a strong orange color. 1.58 carat Oval Orange Citrine Quartz Shape: Oval Crown: Modified Brilliant Pavili...

Category

Unknown Early 20th Century Loose Gemstones

Materials

Citrine, Quartz

Natural Myanmar Jade Bohp Pear Loose Stones, Bright Fluorescent Green
Natural Myanmar Jade Bohp Pear Loose Stones, Bright Fluorescent Green

Natural Myanmar Jade Bohp Pear Loose Stones, Bright Fluorescent Green

Located in Kowloon, HK

Add a bold, bohemian touch to your next design with this carved jade pear-shaped loose stone pair. These stones feature a vibrant fluorescent-style green tone with deep dark green pa...

Category

Hong Kong Artisan Early 20th Century Loose Gemstones

Materials

Jade

Radiant GIA Certified 0.25CT Fancy Pink Round Brilliant Diamond With VS1 Clarity
Radiant GIA Certified 0.25CT Fancy Pink Round Brilliant Diamond With VS1 Clarity

Radiant GIA Certified 0.25CT Fancy Pink Round Brilliant Diamond With VS1 Clarity

Located in New York, NY

ITEM DESCRIPTION ID #: 55125 Stone Shape: Round Diamond Weight: 0.25CT Clarity: VS1 Color: Faint Pink Cut: Good Measurements: 4.00x4.02x2.49mm Depth %: 62% Table %: 59% Symmetry: E...

Category

Antique Early 20th Century Loose Gemstones

Materials

Pink Diamond

Previously Available Items
Loose Antique Diamond 0.85 Carat Old European Cut H Color SI1 Clarity GIA Cert.
Loose Antique Diamond 0.85 Carat Old European Cut H Color SI1 Clarity GIA Cert.

Loose Antique Diamond 0.85 Carat Old European Cut H Color SI1 Clarity GIA Cert.

Located in Media, PA

Offered here is a loose natural antique diamond accompanied by a GIA Diamond Grading Report (Report No. 1236858894). This stone is an Old European Brilliant cut, a highly desirable a...

Category

Vintage Early 20th Century Loose Gemstones

Materials

Diamond

1.60ct GIA Old European Cut Diamond  Natural I VS2  Antique Loose Stone
1.60ct GIA Old European Cut Diamond  Natural I VS2  Antique Loose Stone

1.60ct GIA Old European Cut Diamond Natural I VS2 Antique Loose Stone

Located in Media, PA

A Masterpiece of Antique Artistry Discover the timeless allure of this 1.60-carat natural Old European Cut (OEC) diamond. Unlike modern, mass-produced diamonds, this stone was hand-f...

Category

Art Deco Vintage Early 20th Century Loose Gemstones

Materials

Diamond

1.74ct Old European Cut Diamond  GIA Natural H VS1  Antique Loose Stone
1.74ct Old European Cut Diamond  GIA Natural H VS1  Antique Loose Stone

1.74ct Old European Cut Diamond GIA Natural H VS1 Antique Loose Stone

Located in Media, PA

The Heritage of the Cut This exceptional 1.74-carat natural diamond is a stunning example of the Old European Cut—the celebrated predecessor to the modern round brilliant. Hand-facet...

Category

Art Deco Vintage Early 20th Century Loose Gemstones

Materials

Diamond

GIA Certified Natural Star Sapphire No Indications of Heating 5.32 Carats
GIA Certified Natural Star Sapphire No Indications of Heating 5.32 Carats

GIA Certified Natural Star Sapphire No Indications of Heating 5.32 Carats

By OGI Ltd

Located in New York, NY

Type: Natural Star Sapphire Weight: 5.32 Carats Measurements: 9.15 x 7.66 x 7.18 mm Transparency: Translucent Color: Blue Phenomenon: Displaying Asterism (Star Effect) GIA Report Num...

Category

Sri Lankan Contemporary Early 20th Century Loose Gemstones

Materials

Star Sapphire

Antique Vintage Islamic Carved Jade Calligraphy Seals
Antique Vintage Islamic Carved Jade Calligraphy Seals

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 t...

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Unknown Early 20th Century Loose Gemstones

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Jade, Sterling Silver

GIA Certified 5231058396 No Heat Red Burma Cabochon Ruby 4.63 Carats
GIA Certified 5231058396 No Heat Red Burma Cabochon Ruby 4.63 Carats

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

GIA Certified No Heat Pear Shape Carving Natural Sapphire Weighing 4.70 Carats
GIA Certified No Heat Pear Shape Carving Natural Sapphire Weighing 4.70 Carats

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 Transparent Color Blue Species Natural Corundum Natural Sapphire TREATMENT: No Indications of Heating One loose stone Weight: 4.70 carats Measurements: 12.79 x 10.63 x 3.33 mm 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

Burmese Contemporary Early 20th Century Loose Gemstones

Materials

Sapphire

GIA Certificated Oval Carved Double Sided Cabochon Emerald Weighing 53.64 Carats
GIA Certificated Oval Carved Double Sided Cabochon Emerald Weighing 53.64 Carats

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

Colombian Contemporary Early 20th Century Loose Gemstones

Materials

Emerald