Untreated Gems
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Gia Certified 1.11ct Unheated Deep Green Blue Sapphire Oval Cut Untreated Gem
By Gems and Jewels UK
Located in Birmingham, GB
Gia Certified 1.11ct Unheated Deep Green Blue Sapphire Oval Cut Untreated Gem
GIA Certified
Category
21st Century and Contemporary More Jewelry
Materials
Sapphire, Blue Sapphire
Fine 1.30Ct Purple Sapphire Gia Certified Oval Cut Untreated Gem 7.1X5.6mm
By Gems and Jewels UK
Located in Birmingham, GB
FINE 1.30ct Purple Sapphire GIA CERTIFIED Oval Cut UNTREATED Gem 7.1x5.6mm
GIA Certified Untreated
Category
21st Century and Contemporary More Jewelry
Materials
Sapphire, Purple Sapphire
GIA Certified 1.30ct Natural Sapphire Teal Green Blue Pear Cut Untreated Gem
Located in Birmingham, GB
GIA Certified 1.30ct Natural Sapphire Teal Green Blue Pear Cut Untreated Gem
Natural Untreated
Category
21st Century and Contemporary More Jewelry
Materials
Sapphire
Vintage 2.00ct Natural Untreated Blue Sapphire Stud Earrings • 14K White Gold 4-
Located in Miami, FL
“Elegant vintage sapphire studs featuring 2.00 carats total of natural, untreated gem-quality blue
Category
Early 2000s Contemporary Stud Earrings
Materials
Blue Sapphire, 14k Gold
Gem No-Heat Burma Pink Sapphire
Diamond Navette Antique Ring
Located in Bethesda, MD
sparkle. This ring combines timeless craftsmanship with the rarity of a natural, untreated gem, making it
Category
Antique 1890s Cluster Rings
Materials
Diamond, Pink Sapphire, 14k Gold
3.80 Carat Loose Lagoon Blue Tourmaline Stone Emerald Cut Afghan Gemstone
Located in Bangkok, TH
gemstone mines of Afghanistan, this untreated gem boasts exceptional transparency and a vivid, evenly
Category
21st Century and Contemporary Afghan Modern Loose Gemstones
Materials
Tourmaline
7.65 Carat Natural Loose Stunning Blue Topaz Stone Fancy Cut Madagascar
s Gem
Located in Bangkok, TH
gemstone-rich lands of Madagascar, this untreated gem offers exceptional clarity and a vibrant, clean tone
Category
21st Century and Contemporary Malagasy Modern Loose Gemstones
Materials
Blue Topaz
5.30 Carat Loose Mismatch Color Tourmaline Pair Cushion Cut Natural Afghan Gems
Located in Bangkok, TH
gemstone-rich mountains of Afghanistan, these untreated gems offer a striking visual balance perfect for
Category
21st Century and Contemporary Afghan Modern Loose Gemstones
Materials
Tourmaline
1.65 Carat Natural Loose Perfect Bi Color Sapphire Cushion Cut Sri Lankan Gem
Located in Bangkok, TH
from Sri Lanka world renowned for producing fine sapphires this untreated gem offers excellent clarity
Category
21st Century and Contemporary Sri Lankan Modern Loose Gemstones
Materials
Sapphire
GGI Certified 3.03 Carat Loose Blue Sapphire Oval Cut Natural Sri Lankan Gem
Located in Bangkok, TH
finest sapphires this untreated gem offers exceptional clarity and depth of color. The oval cut enhances
Category
21st Century and Contemporary Sri Lankan Modern Loose Gemstones
Materials
Blue Sapphire
Gia Certified 1.02ct Untreated Dark Blue Sapphire Round Cut Untreated Loose Gem
By Gems and Jewels UK
Located in Birmingham, GB
Gia Certified 1.02ct Untreated Dark Blue Sapphire Round Cut Untreated Loose Gem
GIA Certified
Category
21st Century and Contemporary More Jewelry
Materials
Sapphire, Blue Sapphire
Spectra Fine Jewelry Gubelin Certified 12.03 Carat Burma Sapphire Diamond Ring
By Spectra Fine Jewelry
Located in New York, NY
connoisseurs who appreciate the rare allure of an untreated gem.
Made by Spectra Fine Jewelry in 2025.
Resizing
Category
21st Century and Contemporary American Modern Cocktail Rings
Materials
Diamond, Sapphire, Gold, 18k Gold, White Gold
2.06Ct Natural Green Sapphire GRA Certified Untreated Heart Cut Gem
By Gems and Jewels UK
Located in Birmingham, GB
2.06Ct Natural Green Sapphire GRA Certified Untreated Heart Cut Gem
Natural Vivid Green Untreated
Category
21st Century and Contemporary More Jewelry
3.10 Carat Natural Loose Light Blue Spinel Stone Cushion Cut Burmese Gemstone
Located in Bangkok, TH
some of the world’s finest spinels, this untreated gem combines rarity with elegance. The light blue
Category
21st Century and Contemporary Burmese Modern Loose Gemstones
Materials
Spinel
1.90 Carat Loose Sphene Stone Cushion Cut Natural Madagascar
s Gemstone
Located in Bangkok, TH
diamonds. Sourced from Madagascar, this untreated gem features excellent clarity and precision faceting
Category
21st Century and Contemporary Malagasy Modern Loose Gemstones
Materials
Other
7.80 Carat Loose Purple Amethyst Custom Precision Cut Natural Brazilian Gemstone
Located in Bangkok, TH
. Sourced from Brazil renowned for producing some of the finest Amethysts in the world this untreated gem
Category
21st Century and Contemporary Brazilian Modern Loose Gemstones
Materials
Amethyst
11.15 Carat Natural Loose Bi Color Ametrine Stone Pixel Cut Brazilian Gemstone
Located in Bangkok, TH
. Ethically sourced from Brazil, a premier origin for high-quality Ametrine, this untreated gem is a symbol of
Category
21st Century and Contemporary Brazilian Modern Loose Gemstones
Materials
Other
4.15 Carat Natural Loose Spessartite Garnet Cushion Cut Tanzanian Gemstone
Located in Bangkok, TH
rich deposits of fine garnets, this untreated gem features excellent clarity and lively internal fire
Category
21st Century and Contemporary African Modern Loose Gemstones
Materials
Garnet
1.15 Carat Loose Bicolor Tourmaline Stone Cushion Cut Natural Afghani Gemstone
Located in Bangkok, TH
untreated gem reflects both rarity and elegance in a compact, refined size. Its soft, blended tones and
Category
21st Century and Contemporary Afghan Modern Loose Gemstones
Materials
Tourmaline
2.15 Carat Loose Garnet Stone Asscher Cut Natural African Gemstone
Located in Bangkok, TH
Africa, this untreated gem offers excellent clarity and a timeless elegance that suits a variety of fine
Category
21st Century and Contemporary African Modern Loose Gemstones
Materials
Garnet
5.80 Carat Loose Bicolor Ametrine Stone Emerald Cut Natural Bolivian Gemstone
Located in Bangkok, TH
and elegant symmetry. Mined from the renowned Anahí mines in Bolivia, this untreated gem is a true
Category
21st Century and Contemporary Bolivian Modern Loose Gemstones
Materials
Other
Natural Vivid Purple Sapphire 1.19ct GRA Certified Untreated Pear Gem 6.8x5.5mm
By Gems and Jewels UK
Located in Birmingham, GB
NATURAL Vivid Purple Sapphire 1.19ct GRA Certified UNTREATED Pear Gem 6.8x5.5mm
Natural GRA
Category
21st Century and Contemporary More Jewelry
Materials
Sapphire
Natural 1.02ct Untreated Bi Colour Sapphire Gia Certified Cushion Cut Gem
By Gems and Jewels UK
Located in Birmingham, GB
Natural 1.02ct Untreated Bi Colour Sapphire Gia Certified Cushion Cut Gem
GIA Certified Untreated
Category
21st Century and Contemporary More Jewelry
Materials
Sapphire
1.60 Carat Natural Loose 2 Piece Tourmaline Cushion Cut Afghani Gemtones
Located in Bangkok, TH
, each stone displays a perfect balance of brilliance, clarity, and natural charm. These untreated gems
Category
21st Century and Contemporary Afghan Modern Loose Gemstones
Materials
Tourmaline
13.10 Carat Natural Loose Light Gold Topaz Stone Cushion Cut Pakistani Gemstone
Located in Bangkok, TH
timeless appeal, light gold topaz symbolizes positivity, abundance, and confidence. This untreated gem is
Category
21st Century and Contemporary Pakistani Modern Loose Gemstones
Materials
Topaz
9.45 Carat Natural Loose Neon Blue Topaz Stone Oval Cut Brazilian Gemstone
Located in Bangkok, TH
country renowned for producing some of the world’s finest Topaz this untreated gem offers both luxury and
Category
21st Century and Contemporary Brazilian Modern Loose Gemstones
Materials
Topaz, Blue Topaz
9.75 Carat Natural Loose Blue Aquamarine Stone Cushion Cut Pakistani Gemstone
Located in Bangkok, TH
the finest Aquamarine sources this untreated gem offers outstanding transparency and elegance
Category
21st Century and Contemporary Pakistani Modern Loose Gemstones
Materials
Aquamarine
10.60 Carat Natural Loose Swiss Blue Topaz Stone Emerald Cut African Gemstone
Located in Bangkok, TH
from Africa, this untreated gem boasts a bold yet calming hue—perfect for fine jewelry such as cocktail
Category
21st Century and Contemporary African Modern Loose Gemstones
Materials
Blue Topaz
8.55 Carat Natural Loose Pretty Ametrine Stone Cushion Cut Brazilian Gemstone
Located in Bangkok, TH
, this untreated gem sparkles with warmth, depth, and elegance. The cushion cut enhances its brilliance
Category
21st Century and Contemporary Brazilian Modern Loose Gemstones
Materials
Other
5.25 Carat Natural Loose Red Umbalite Garnet Stone Cushion Cut From Africa
Located in Bangkok, TH
custom jewelry design, this untreated gem combines elegance with natural charm. Its bold color and
Category
21st Century and Contemporary African Modern Loose Gemstones
Materials
Garnet
10.70 Carat Natural Loose Bi Color Ametrine Baguette Cut Bolivian Gemstone
Located in Bangkok, TH
Ametrine this untreated gem offers both rarity and elegance. The elongated baguette cut gives it a modern
Category
21st Century and Contemporary Bolivian Modern Loose Gemstones
Materials
Other
1.85 Carat Apple Green Peridot Stone Asscher Cut Natural Pakistani Gemstone
Located in Bangkok, TH
mountains of Pakistan, this untreated gem offers excellent clarity and a lively glow that makes it perfect
Category
21st Century and Contemporary Pakistani Modern Loose Gemstones
Materials
Peridot
2.45 Carat Loose Fine Sphene Stone Heart Shaped Natural Madagascar
s Gemstone
Located in Bangkok, TH
jewelry design, this untreated gem blends beauty, rarity, and optical wonder. Perfect for collectors and
Category
21st Century and Contemporary Malagasy Modern Loose Gemstones
Materials
Other
Natural 1.07ct Untreated Deep Green Blue Sapphire Gia Certified Heart Cut Gem
By Gems and Jewels UK
Located in Birmingham, GB
Natural 1.07ct Untreated Deep Green Blue Sapphire Gia Certified Heart Cut Gem
GIA Certified
Category
21st Century and Contemporary More Jewelry
Gia Certified Pink Purple Sapphire Untreated 0.93ct Oval Cut Loose Gem 6.6x4.7mm
By Gems and Jewels UK
Located in Birmingham, GB
Gia Certified Pink Purple Sapphire Untreated 0.93ct Oval Cut Loose Gem 6.6x4.7mm
GIA Certified
Category
21st Century and Contemporary More Jewelry
Materials
Sapphire, Purple Sapphire
Natural Untreated Sapphire 1.17Ct Gia Certified Deep Blue Oval Cut Unheated Gem
By Gems and Jewels UK
Located in Birmingham, GB
NATURAL Untreated Sapphire 1.17ct GIA CERTIFIED DEEP Blue Oval Cut Unheated Gem
Natural Untreated
Category
21st Century and Contemporary More Jewelry
Materials
Sapphire
Gia Certified 1.13ct Pink Purple Sapphire Untreated Oval Cut Rare Gem 6.8x5.5mm
By Gems and Jewels UK
Located in Birmingham, GB
Gia Certified 1.13ct Pink Purple Sapphire Untreated Oval Cut Rare Gem 6.8x5.5mm
GIA Certified
Category
21st Century and Contemporary More Jewelry
Materials
Sapphire, Purple Sapphire
1.17Ct Sapphire Gia Certified Natural Green Blue Teal Untreated Natural Oval Gem
By Gems and Jewels UK
Located in Birmingham, GB
1.17ct Sapphire GIA Certified NATURAL Green Blue Teal UNTREATED NATURAL Oval Gem
GIA Certified
Category
21st Century and Contemporary More Jewelry
Materials
Sapphire
Gia Certified Colour Change Purple Sapphire 1.07Ct Untreated Oval Cut Rare Gem
By Gems and Jewels UK
Located in Birmingham, GB
Gia Certified Colour Change Purple Sapphire 1.07Ct Untreated Oval Cut Rare Gem
Rare Untreated
Category
21st Century and Contemporary More Jewelry
Materials
Sapphire, Purple Sapphire
1.60 Carat Natural Loose Bi Color Ametrine Stone Emerald Cut Bolivian Gemstone
Located in Bangkok, TH
Ametrine is both captivating and meaningful. This untreated gem displays a stunning natural transition of
Category
21st Century and Contemporary Bolivian Modern Loose Gemstones
Materials
Other
1.13ct Unique Olive Green Yellow Untreated Heart Cut Sapphire Gem IGI Blister
By Gems and Jewels UK
Located in Birmingham, GB
1.13ct Unique Olive Green Yellow Untreated Heart Cut Sapphire Gem IGI Blister
Fine Unique Colour
Category
20th Century More Jewelry
Materials
Sapphire
GIA Certified 1.01 Untreated Vivid Green Yellow Sapphire Emerald Octagon Cut Gem
By Gems and Jewels UK
Located in Birmingham, GB
GIA Certified 1.01 Untreated Vivid Green Yellow Sapphire Emerald Octagon Cut Gem
GIA Certified
Category
21st Century and Contemporary More Jewelry
Materials
Emerald, Yellow Sapphire
2.80 Carat Natural Loose Lavender Spinel Stone Emerald Cut Tanzanian Gemstone
Located in Bangkok, TH
some of the finest Spinel deposits this untreated gem stands out for its natural beauty and exceptional
Category
21st Century and Contemporary Tanzanian Modern Loose Gemstones
Materials
Spinel
2.25 Carat Natural Loose Bubblegum Pink Tourmaline Cushion Cut Afghan Gemstone
Located in Bangkok, TH
renowned gemstone regions of Afghanistan, this untreated gem displays a delicate yet striking shade of pink
Category
21st Century and Contemporary Afghan Modern Loose Gemstones
Materials
Tourmaline
13.05 carats Pink Kunzite Stone Cushion Cut Natural Afghan Gemstone
Located in Bangkok, TH
Shape Cut cushion
NA
This exquisite 13.05 carat Pink Kunzite gemstone is a natural, untreated gem
Category
21st Century and Contemporary Afghan Modern Loose Gemstones
Materials
Kunzite
2.00 Carat Gorgeous Orange Red Spinel Loose Stone Cushion Cut form Burma
Located in Bangkok, TH
(Myanmar), this untreated gem is a rare and highly sought-after variety of Spinel, prized for its vivid
Category
21st Century and Contemporary Burmese Modern Loose Gemstones
Materials
Spinel
13.25 Carat Loose Exquisite Ametrine Stone Baguette Cut Natural African Gemstone
Located in Bangkok, TH
, this untreated gem is a remarkable example of nature’s artistry. Its generous size and elegant
Category
21st Century and Contemporary African Modern Loose Gemstones
Materials
Other
GIA Certified Fine Blue 1.19ct Untreated Sapphire Pear Cut Unheated Rare Gem
By Gems and Jewels UK
Located in Birmingham, GB
GIA Certifier Fine Blue Untreated Sapphire Gemstone.
Unheated blue sapphire with a beautiful deep
Category
21st Century and Contemporary Loose Gemstones
Materials
Sapphire, Blue Sapphire
Natural 1.04ct Sapphire Untreated Heart Cut Green Blue Gia Certified No Heat Gem
By Gems and Jewels UK
Located in Birmingham, GB
Natural 1.04ct Sapphire Untreated Heart Cut Green Blue Gia Certified No Heat Gem
GIA Certified
Category
21st Century and Contemporary More Jewelry
Gia Certified Unique 1.13ct Bi Colour Sapphire Bi Colour Untreated Fancy Cut Gem
By Gems and Jewels UK
Located in Birmingham, GB
Gia Certified Unique 1.13ct Bi Colour Sapphire Bi Colour Untreated Fancy Cut Gem
GIA Certified
Category
21st Century and Contemporary More Jewelry
4.05 carats Mint Green Tourmaline Stone Cushion Cut Afghan Gemstone
Located in Bangkok, TH
Afghanistan. Featuring a vibrant mint green hue and eye-clean clarity, this untreated gem perfect for custom
Category
21st Century and Contemporary Afghan Modern Loose Gemstones
Materials
Tourmaline
GRS Certified 3.65 Natural No Heat BURMESE Cushion Diamond Ring
By Antinori Fine Jewels
Located in Chicago, IL
authenticated as a natural, untreated gem of Burmese origin, further enhancing its value and desirability
Category
2010s Unknown Contemporary Engagement Rings
Materials
Diamond, White Diamond, Ruby, Platinum
$79,200 Sale Price
20% Off
GIA Certified 6.05 Carat Ceylon No Heat Colour Change Oval Cut Blue Sapphire
Located in Kowloon, HK
finest sapphires, this untreated gem stands as a testament to nature’s artistry and authenticity. Its
Category
2010s Loose Gemstones
Materials
Blue Sapphire
Tennis Bracelet Yellow Gold Genuine Natural Green Russalite 12.50 Carats 21 Dia
By Five Star Jewelry
Located in Austin, TX
year, Emerald is one of the newest, most exciting gemstones. An all natural untreated gem of unique
Category
21st Century and Contemporary American Modern Tennis Bracelets
Materials
Diamond, Emerald, 14k Gold, Yellow Gold
$3,599 Sale Price
20% Off
Eighteen Karat Gold Sapphires Brooch with Spinel and Paraiba Tourmalines
By Polya Medvedeva Jewellery
Located in Berlin, DE
natural and untreated gems used in this brooch are:
Cushion-cut green natural sapphire, 3.61 carats
Category
2010s German Contemporary Brooches
Materials
Garnet, Rubelite, Sapphire, Blue Sapphire, Green Sapphire, Spinel, Tourm...
Lustrous Green Sphene Gemstone: Multi Color Cushion Cut, 2.66 Carat
Located in Peshawar, PK
excellence. As a **naturally untreated** gem, its vibrant green hue and optical properties are entirely earth
Category
2010s Pakistani Loose Gemstones
Materials
Other
Eighteen Karat Gold Cocktail Ring with Sapphires and Paraiba Tourmalines
By Polya Medvedeva Jewellery
Located in Berlin, DE
, untreated gems include a cushion-cut green sapphire (3.61 carats, 10x9.3 mm), a fancy cushion spinel (2.28
Category
2010s German Contemporary Cocktail Rings
Materials
Garnet, Sapphire, Blue Sapphire, Pink Sapphire, Green Sapphire, Spinel, ...
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Untreated Gems For Sale on 1stDibs
There is a broad range of untreated gems for sale on 1stDibs. These distinct designs — crafted with great care and often made from gold, silver and 18k gold — can elevate any look. Find a collection of 76 vintage versions or 658 modern creations for a more contemporary example of these cherished accessories. Our collection is diverse and broad-ranging, and pieces in stock date back to the 18th Century while others were produced as recently as the 21st Century. Pieces in our collection of untreated gems made by Art Deco jewelers — as well as those associated with contemporary — are very popular. Versions of these items have been a part of the life’s work for many jewelers, but those produced by Gems and Jewels UK, Polya Medvedeva Jewellery and Merkaba are consistently popular. Lovers of these pieces agree that it’s a versatile accessory, but a selection from our variety of 290 sapphire versions can add an especially stylish touch. A selection of oval cut, round cut and cushion cut can be found today on these pages. When shopping our range of untreated gems, you’ll find that there are less available pieces for men today than there are for women.
How Much are Untreated Gems?
Prices for untreated gems can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $34 and can go as high as $6,500,000, while untreated gems, on average, fetch $2,423.