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
$948
H 0.23 in W 0.17 in D 0.14 in
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
$1,151
H 0.28 in W 0.23 in D 0.15 in
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
$1,850
W 0.32 in D 0.23 in L 0.4 in
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
$280
W 0.45 in D 0.35 in L 0.46 in
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
$950
W 0.27 in D 0.23 in L 0.35 in
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
$460
W 0.26 in D 0.15 in L 0.28 in
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
$4,800
W 0.31 in D 0.2 in L 0.38 in
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
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
Gia Certified 1.18ct Ceylon Yellow Sapphire Untreated Pear Teardrop Cut Gem
By Gems and Jewels UK
Located in Birmingham, GB
Gia Certified 1.18ct Ceylon Yellow Sapphire Untreated Pear Teardrop Cut Gem
Natural GIA Certified
Category
21st Century and Contemporary More Jewelry
Materials
Sapphire, Yellow Sapphire
Gia Certified Untreated Green Blue Australian Sapphire 0.85ct Triangle Cut Gem
By Gems and Jewels UK
Located in Birmingham, GB
Gia Certified Untreated Green Blue Australian Sapphire 0.85ct Triangle Cut Gem
GIA Certified
Category
21st Century and Contemporary More Jewelry
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
Gia Certified 1.15ct NATURAL Blue Sapphire Untreated Pear Teardrop Cut Gem
By Gems and Jewels UK
Located in Birmingham, GB
GIA CERTIFIED 1.15ct NATURAL Blue Sapphire UNTREATED Pear Teardrop Cut Gem
GIA Certified Natural
Category
21st Century and Contemporary More Jewelry
Materials
Sapphire, Blue Sapphire
$1,083
H 0.3 in W 0.26 in D 0.13 in
IGI Certified 1.11Ct Natural Teal Blue Sapphire Untreated Unheated Rare Gem
By Gems and Jewels UK
Located in Birmingham, GB
IGI Certified 1.11Ct Natural Teal Blue Sapphire Untreated Unheated Rare Gem
Natural Deep Teal Blue
Category
21st Century and Contemporary More Jewelry
Materials
Blue Sapphire, Sapphire
$1,016
H 0.23 in W 0.24 in D 0.16 in
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
$2,200
W 0.32 in D 0.22 in L 0.34 in
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
$380
W 0.27 in D 0.2 in L 0.3 in
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
$230
W 0.47 in D 0.35 in L 0.54 in
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
$850
W 0.34 in D 0.23 in L 0.36 in
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
$370
W 0.22 in D 0.17 in L 0.24 in
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
$495
W 0.35 in D 0.28 in L 0.5 in
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
$880
H 0.19 in W 0.26 in
Natural 1.04ct Untreated Deep Blue Sapphire Gia Certified Pear Teardrop Cut Gem
By Gems and Jewels UK
Located in Birmingham, GB
Natural 1.04ct Untreated Deep Blue Sapphire Gia Certified Pear Teardrop Cut Gem
GIA Certified
Category
21st Century and Contemporary More Jewelry
Materials
Sapphire, Blue 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
$1,219
H 0.25 in W 0.17 in D 0.21 in
Gia Certified 1.00ct Red Purple Sapphire Natural Untreated Round Cut Rare Gem
By Gems and Jewels UK
Located in Birmingham, GB
Gia Certified 1.00ct Red Purple Sapphire Natural Untreated Round Cut Rare Gem
GIA Certified
Category
21st Century and Contemporary More Jewelry
Materials
Sapphire, Purple 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
$1,016
H 0.27 in W 0.22 in D 0.15 in
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
$880
H 0.27 in W 0.23 in D 0.15 in
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
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
$950
W 0.51 in D 0.36 in L 0.52 in
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
$280 / set
W 0.41 in D 0.36 in L 0.49 in
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
$320
W 0.46 in D 0.38 in L 0.47 in
Natural Untreated Deep Red Ruby Pear Cut 0.76Ct IGI Certified Rare Gem
By Gems and Jewels UK
Located in Birmingham, GB
Natural Untreated Deep Red Ruby Pear Cut 0.76Ct IGI Certified Rare Gem
Natural Deep Red Untreated
Category
21st Century and Contemporary More Jewelry
Materials
Ruby
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
$420
W 0.45 in D 0.35 in L 0.58 in
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
$480
W 0.38 in D 0.25 in L 0.4 in
1.41ct Unique IGI Blue Yellow Green Sapphire Untreated Fancy Pentagon Cut Gem
By Gems and Jewels UK
Located in Birmingham, GB
1.41ct Unique IGI Blue Yellow Green Sapphire Untreated Fancy Pentagon Cut Gem
Unique Untreated
Category
20th Century More Jewelry
$460
H 0.13 in W 0.37 in D 0.2 in
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
$180
W 0.27 in D 0.21 in L 0.28 in
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
$480
W 0.3 in D 0.23 in L 0.34 in
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
$880
H 0.17 in W 0.24 in D 0.15 in
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 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
GIA Certified 1.31ct Parti Colour Sapphire Blue Yellow Untreated Emerald Cut Gem
By Gems and Jewels UK
Located in Birmingham, GB
Rare Untreated Australian Parti Colour Sapphire Gemstone.
1.31 Carat unheated sapphire with a rare
Category
21st Century and Contemporary Loose Gemstones
Materials
Sapphire, Blue Sapphire, Yellow Sapphire, Green Sapphire
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
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
$1,800
W 0.28 in D 0.2 in L 0.36 in
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
$290
W 0.27 in D 0.2 in L 0.34 in
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
$750
W 0.29 in D 0.16 in L 0.3 in
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
$320
W 0.45 in D 0.45 in L 0.49 in
21.40 carats Pink Kunzite Stone Emerald Cut Natural Afghan Gemstone
Located in Bangkok, TH
natural, untreated gem sourced from the renowned mines of Afghanistan, celebrated for producing some of
Category
21st Century and Contemporary Afghan Modern Loose Gemstones
Materials
Kunzite
$550
W 0.45 in D 0.45 in L 0.68 in
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
$420
W 0.48 in D 0.37 in L 0.63 in
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
$480
W 0.32 in D 0.26 in L 0.39 in
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
Ruby, White Diamond, Diamond, Platinum
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
Tourmaline, Pink Sapphire, Paraiba, Spinel, Green Sapphire, Blue Sapphir...
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
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
Tourmaline, Paraiba, Spinel, Green Sapphire, Pink Sapphire, Blue Sapphir...
Twelve Carats Sapphires and Paraiba Tourmalines Yellow Gold Pendant Necklace
By Polya Medvedeva Jewellery
Located in Berlin, DE
natural and untreated gems used in this Pendant Necklace are:
Cushion-cut green natural sapphire, 3.61
Category
21st Century and Contemporary German Contemporary Pendant Necklaces
Materials
Tourmaline, Pink Sapphire, Paraiba, Spinel, Green Sapphire, Blue Sapphir...
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Untreated Gems For Sale on 1stDibs
Find an expansive variety of untreated gems available on 1stDibs. These distinct designs — crafted with great care and often made from 18k Gold, Gold and Silver — can elevate any look. Find a collection of 2 vintage versions or 21 modern creations for a more contemporary example of these cherished accessories. Our inventory has long been popular, and it includes earlier versions that date to the 20th Century and newer variations that were made as recently as the 21st Century. The designs in our inventory of untreated gems bearing Contemporary or Art Deco hallmarks are very popular. Fine Jewels UK, Merkaba and Thesis Gems and Jewelry each produced beautiful examples of these items that are worth considering. Many pieces in our collection are stylish for most occasions, but Sapphire versions, from our inventory of 13, can add a particularly distinctive touch to your look, day or night. There are many oval cut, pear cut and cushion cut untreated gems for sale. There aren’t many items for men in our collection of untreated gems, as most of the options available are for women.
How Much are Untreated Gems?
On average, untreated gems at 1stDibs sell for $1,322, while they’re typically $311 on the low end and $325,000 for the highest priced versions of this item.
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