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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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0.09ctw White Diamond, Round, VVS

2.2 mm (calibrated)

$ 208.54

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1.05ct Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 20.92

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2.76ct Violet Amethyst, Trillion, VS-SI

10 x 10 mm (calibrated)

$ 20.68

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3.55ct Green Prehnite, Oval, Transparent

10 x 8 mm (calibrated)

$ 19.29

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11.68ct Violet Amethyst, Briolette, VVS-VS

18.8 x 10.6 mm

$ 51.19

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16.40ctw White Dendritic Agate, Pear Shape, Opaque

18 x 13 mm (calibrated)

$ 13.06

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1.96ct Orange Hessonite Garnet, Cushion, VS-SI

7 x 7 mm (calibrated)

$ 37.00

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3.22ct Green Prehnite, Oval, Transparent

9.5 x 7.9 mm

$ 20.71

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3.07ct Yellow Citrine, Flower Cut, Transparent

9 x 9 mm (calibrated)

$ 23.55

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93.95ct Brown Tiger'S Eye, Oval, Opaque

39.1 x 24.7 mm

$ 43.23

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1.21ct Orange Zircon, Round, VVS-VS

6 mm (calibrated)

$ 28.88

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1.10ct Multicolor Labradorite, Round, Translucent

6 mm (calibrated)

$ 2.37

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2.29ctw White Sillimanite Cat'S Eye, Oval, Translucent

6.6 x 4.5 mm

$ 9.08

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1.94ct Orange Hessonite Garnet, Oval, VS

8.1 x 6.6 mm

$ 38.64

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18.27ct Blue Chalcedony, Cushion, Opaque

19.9 x 18.1 mm

$ 45.50

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0.83ctw Green Peridot, Pear Shape, VVS-VS

6 x 4 mm (calibrated)

$ 7.27

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1.53ct Yellow Beryl, Oval, VVS

9 x 7 mm (calibrated)

$ 30.48

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33.51ct Green Maw-Sit-Sit, Baguette, Opaque

16.5 x 14.8 mm

$ 110.14

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25.12ct Multicolor Jasper, Marquise, Opaque

28.9 x 14 mm

$ 14.26

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2.63ct Green Prehnite, Oval, Transparent/Translucent

8.8 x 7.8 mm

$ 16.97

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5.12ctw Yellow Citrine, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 28.05

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0.67ct Green Peridot, Oval, VVS

7 x 5 mm (calibrated)

$ 9.35

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0.55ct Green Peridot, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 9.86

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104.89ct Pink Rose Quartz, Pear Shape, Translucent

35.2 x 30 mm

$ 229.84

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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

I had a very easy time navigating the web page and using filters to find what I was looking for. The varied selection was nice to see and pricing is clear and fair.

Posted By Mattick in May, 2026
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Overall Rating -> 10 star ratings

It's mostly good, only some item's are easier to find through the search than the menu

Posted By Wayne in July, 2025
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Overall Rating -> 10 star ratings

I've purchased from here many times over the last decade+. I find the information easy to understand, helpful, and interesting. I have always been satisfied that I got exactly what I ordered. Pictures and descriptions are clear and unique to each stone.

Posted By Maggie in August, 2025
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Overall Rating -> 10 star ratings

Great site for finding specific stones and sizes for individual pieces of jewelry

Posted By Designer in December, 2025
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Overall Rating -> 8 star ratings

It was a good interaction I got a good gemstone for cheap

Posted By Jon in December, 2025
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Overall Rating -> 10 star ratings

I have been very happy with my prior purchases and enjoy the website experience.

Posted By Trouble in November, 2025
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