Untreated Gemstones
Browse our selection of untreated gemstones featuring natural color, clarity and beauty without enhancements.
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Bi-color
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Black
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Blue
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Brown
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Gray
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Green
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Multicolor Untreated Gemstones
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Orange
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Pink
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Purple
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Red
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Turquoise Untreated Gemstones
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Violet
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White
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Yellow
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Single |
Pairs |
Lots |
Faceted |
Cabochons |
23.46ct Turquoise Turquoise, Oval, Opaque
22.4 x 20.7 mm
$ 84.46
28.70ct Turquoise Turquoise, Oval, Opaque
29.9 x 19 mm
$ 103.32
24.85ct Turquoise Turquoise, Oval, Opaque
25 x 18 mm (calibrated)
$ 89.46
45.70ct Turquoise Turquoise, Oval, Opaque
32.6 x 18.5 mm
$ 164.52
26.98ct Turquoise Turquoise, Oval, Opaque
24.5 x 16.1 mm
$ 97.13
62.74ct Turquoise Turquoise, Oval, Opaque
31.4 x 26 mm
$ 225.86
21.29ct Turquoise Turquoise, Oval, Opaque
22.7 x 15.4 mm
$ 77.16
28.58ct Turquoise Turquoise, Oval, Opaque
23.4 x 16.2 mm
$ 102.89
12.52ct Multicolor Turquoise, Pear Shape, Opaque
21.7 x 14.7 mm
$ 25.04
31.22ct Turquoise Turquoise, Oval, Opaque
25 x 18 mm (calibrated)
$ 93.66
23.17ct Turquoise Turquoise, Oval, Opaque
21.4 x 16.3 mm
$ 83.41
27.22ct Turquoise Turquoise, Round, Opaque
21.8 mm
$ 97.99
82.19ct Turquoise Turquoise, Oval, Opaque
33 x 28.5 mm
$ 295.88
19.46ct Turquoise Turquoise, Oval, Opaque
24.8 x 15.9 mm
$ 70.52
27.55ct Turquoise Turquoise, Oval, Opaque
24.4 x 16.2 mm
$ 99.18
27.71ct Turquoise Turquoise, Oval, Opaque
24 x 17.6 mm
$ 99.76
27.65ct Turquoise Turquoise, Oval, Opaque
25.2 x 18.8 mm
$ 99.54
27.47ct Turquoise Turquoise, Oval, Opaque
21.8 x 15.2 mm
$ 98.89
20.56ct Turquoise Turquoise, Oval, Opaque
21.8 x 17.1 mm
$ 74.02
45.72ct Turquoise Turquoise, Oval, Opaque
25.1 x 19.9 mm
$ 164.59
34.47ct Turquoise Turquoise, Oval, Opaque
21.9 x 19.8 mm
$ 103.41
25.11ct Turquoise Turquoise, Oval, Opaque
23.9 x 13.6 mm
$ 90.40
37.13ct Turquoise Turquoise, Oval, Opaque
27.6 x 20.9 mm
$ 133.67
26.96ct Turquoise Turquoise, Oval, Opaque
21.6 x 17.6 mm
$ 97.06
Why Buy Untreated Gemstones from GemSelect?
- Trusted Worldwide Since 2003
- Supplying natural gemstones to jewelers and collectors in 120+ countries
- Verified natural gemstones
- View All GemSelect Reviews on Bizrate
- Secure checkout and insured worldwide delivery
- 30-day returns and satisfaction guarantee
Natural Untreated Gemstones
Our untreated gemstones are completely natural and have not undergone any enhancement processes. These gems display their original color and clarity as formed in nature, making them highly valued by collectors, jewelers, and gemstone enthusiasts.
Buy Untreated Gemstones Online
At GemSelect you can easily shop untreated gemstones online with confidence. Our inventory includes carefully sourced loose gemstones from around the world, with full transparency regarding treatments and gem origins.
Why Choose Untreated Gems?
Untreated gems are prized because they remain exactly as nature created them. Without heat or chemical treatments, these stones offer rarity and authenticity that many collectors and jewelry designers prefer.
Unheated Sapphire and Ruby
Some of the most sought-after untreated gemstones include unheated sapphire and ruby. These rare stones retain their natural color and are highly valued due to the absence of heat treatment commonly used to enhance corundum.
Gemstone Authenticity and Transparency
Every gemstone at GemSelect comes with clear treatment disclosure. When purchasing untreated stones, buyers can be confident they are receiving authentic gems that have not been altered by heat or other enhancement methods.
Untreated Gems for Custom Jewelry
Natural untreated gemstones are perfect for custom jewelry pieces. Their unique appearance ensures every ring, pendant, or pair of earrings features a one-of-a-kind gemstone created by nature.
Rare and Collectible Gemstones
Because many gemstones are routinely treated, truly untreated examples can be relatively rare. Collectors often seek untreated stones because they represent the most natural state of a gemstone.
Learn more about gemstone treatments and natural gem formation on our Gemstone Treatment Guide.
FAQs
What are untreated gemstones?
Untreated gemstones are natural gems that have not been enhanced with heat, chemicals, irradiation, or other treatments. They retain their original appearance as formed in nature.
Are untreated gemstones more valuable?
In many cases untreated gemstones are more valuable because they are rarer than treated stones. Natural color without enhancement is highly prized by collectors and investors.
How can I tell if a gemstone is untreated?
Gemstone treatment is typically determined through gemological testing. Reputable sellers like GemSelect clearly disclose whether a stone is untreated or has received any enhancements.
Which gemstones are commonly untreated?
Some gemstones frequently found untreated include garnet, spinel, peridot, and certain sapphires. However, many gem types may be treated depending on their origin and quality.
Are untreated gemstones suitable for jewelry?
Yes, untreated gemstones can be excellent for jewelry depending on their hardness and durability. Popular choices include sapphire, ruby, spinel, and garnet.
GemSelect Certified Store Reviews
GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!
Overall Rating -> 10 
Love beauty, color, quality, and price of these gems. Personal projects and will come here soon and everytime.
Overall Rating -> 10
It was easy and to the point
Overall Rating -> 10
GemSelect is always my first choice for purchasing gemstones. The fact that the gems are always exactly as described and pictured on the website has earned my trust many times over. Even when I don't buy, I still love browsing all the beautiful stones. My new favorites are the bright green Tsavorites!
Overall Rating -> 10
Enjoy viewing the selections. Excellent product
Overall Rating -> 10
I have shopped at Gemselect for nearly 20 years. I especially like that you see pictures of the exact gem you are purchasing. You are a trusted source.
Overall Rating -> 8 
It was a good interaction I got a good gemstone for cheap
