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Home Gemstones Untreated Gemstones

Untreated Gemstones

Browse our selection of untreated gemstones featuring natural color, clarity and beauty without enhancements.

Untreated Gemstones Weight
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1.73ct Green Tourmaline, Oval, VS-SI

7.7 x 6.6 mm

$ 201.03

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3.92ct Yellow Rutile Quartz, Oval, Transparent

12 x 8 mm (calibrated)

$ 9.76

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0.63ct Orange Sphalerite, Round, SI

4.7 mm

$ 31.37

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1.58ct Yellow Beryl, Oval, VS

9 x 7 mm (calibrated)

$ 37.77

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9.82ct Multicolor Labradorite, Pear Shape, Translucent

16 x 12 mm (calibrated)

$ 21.71

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3.48ct Yellow Rutile Topaz, Pear Shape, Transparent

13.8 x 7.5 mm

$ 72.21

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7.67ct Multicolor Agate, Sphere / Ball, Opaque

10 mm (calibrated)

$ 6.12

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1.31ct Yellow Beryl, Oval, VS

9 x 7 mm (calibrated)

$ 26.10

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2.93ctw Yellow Citrine, Emerald Cut, VVS-VS

8 x 6 mm (calibrated)

$ 20.36

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0.96ct Orange Hessonite Garnet, Round, VS

6 mm (calibrated)

$ 14.67

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1.03ct Green Peridot, Emerald Cut, VS

7 x 5 mm (calibrated)

$ 16.42

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18.34ct White Howlite, Pear Shape, Opaque

22.9 x 21.2 mm

$ 9.13

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2.84ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 21.28

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1.07ct Orange Zircon, Oval, VVS

6 x 4.8 mm

$ 15.99

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51.56ct Green Uvarovite Garnet Drusy, Fancy, Opaque

38.6 x 23 mm

$ 77.03

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0.21ct Black Diamond, Round, Opaque

3.5 mm (calibrated)

$ 99.90

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2.29ct Purple Rhodolite Garnet, Oval, VS

8.1 x 6.4 mm

$ 91.23

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0.89ctw Yellow Citrine, Marquise, VS

8 x 4 mm (calibrated)

$ 6.21

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0.88ct White Sillimanite Cat'S Eye, Oval, Transparent

6.4 x 3.9 mm

$ 3.38

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25.13ct Multicolor Jasper, Square, Opaque

22.2 x 21.9 mm

$ 27.53

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39.97ct Multicolor Rhodonite, Oval, Opaque

26 x 21.8 mm

$ 23.09

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7.78ct Yellow Citrine, Emerald Cut, VVS

14 x 10 mm (calibrated)

$ 45.48

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43.16ct Red Strawberry Quartz, Fancy, Opaque

37.4 x 12.2 mm

$ 4.30

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0.63ct Yellow Spessartite Garnet, Oval, VS

5.1 x 4.1 mm

$ 20.92

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Why Buy Untreated Gemstones from GemSelect?

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.

Natural Untreated Loose Gemstones

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 star ratings

Good selection, using for custom jewlery for my wife.

Posted By Smitty in June, 2025
Source: Bizrate

Overall Rating -> 7 star ratings

Easy, quick.

Posted By Mich in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Good, hope gem quality is good and genuine

Posted By Varun in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Great! Affordable

Posted By Spinellope in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Great experience. I can't wait to explore on the website further.

Posted By Kymmie in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Gem Select has a user friendly website and the product is very good as is the price. The gems are described accurately and I always get what I think I'm getting.

Posted By Happy Customer in June, 2025
Source: Bizrate
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