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Untreated Gemstones

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

Untreated Gemstones Weight
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1.16ct Pink Morganite, Pear Shape, VS
Morganite Product Video (478207)

1.16ct Pink Morganite, Pear Shape, VS

9.5 x 5.4 mm

$ 127.09

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2.01ct Orange Moonstone, Trillion, Translucent

2.01ct Orange Moonstone, Trillion, Translucent

8 x 8 mm (calibrated)

$ 4.00

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0.56ct Red Pyrope Garnet, Heart, VS

0.56ct Red Pyrope Garnet, Heart, VS

5 x 5 mm (calibrated)

$ 13.94

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13.99ct Brown Tiger'S Eye, Baguette, Opaque

13.99ct Brown Tiger'S Eye, Baguette, Opaque

18 x 13 mm (calibrated)

$ 13.94

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2.36ctw Green Prehnite, Oval, Transparent

2.36ctw Green Prehnite, Oval, Transparent

7.2 x 6.4 mm

$ 12.93

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2.71ct Violet Amethyst, Marquise, VVS

2.71ct Violet Amethyst, Marquise, VVS

15 x 7 mm

$ 18.89

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18.89ct Multicolor Jasper, Oval, Opaque

18.89ct Multicolor Jasper, Oval, Opaque

20 x 15 mm (calibrated)

$ 15.53

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0.45ct Yellow Beryl, Oval, VS

0.45ct Yellow Beryl, Oval, VS

7 x 5 mm (calibrated)

$ 8.59

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3.10ctw Red Pyrope Garnet, Square, VVS-VS

3.10ctw Red Pyrope Garnet, Square, VVS-VS

4 x 4 mm (calibrated)

$ 23.77

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31.84ct Gray Hematite, Oval, Opaque

31.84ct Gray Hematite, Oval, Opaque

24.3 x 15.1 mm

$ 31.04

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1.78ct Multicolor Labradorite, Pear Shape, Translucent

1.78ct Multicolor Labradorite, Pear Shape, Translucent

9 x 6 mm (calibrated)

$ 3.93

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1.60ct Orange Hessonite Garnet, Oval, VS

1.60ct Orange Hessonite Garnet, Oval, VS

7.9 x 6.3 mm

$ 47.66

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39.63ct Multicolor Coral, Pear Shape, Opaque
Coral Product Video (497604)

39.63ct Multicolor Coral, Pear Shape, Opaque

35 x 29.6 mm

$ 40.13

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1.08ct Pink Strawberry Quartz, Round, Transparent

1.08ct Pink Strawberry Quartz, Round, Transparent

7 mm (calibrated)

$ 8.61

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2.80ctw Green Tsavorite Garnet, Round, VS-SI
Tsavorite Garnet Product Video (389845)

2.80ctw Green Tsavorite Garnet, Round, VS-SI

2.4 mm (calibrated)

$ 217.47

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1.64ct Yellow Beryl, Oval, VVS

1.64ct Yellow Beryl, Oval, VVS

9 x 7 mm (calibrated)

$ 46.21

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2.41ctw White Sillimanite Cat'S Eye, Oval, Transparent

2.41ctw White Sillimanite Cat'S Eye, Oval, Transparent

7.4 x 4.9 mm

$ 7.92

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0.72ct Orange Zircon, Oval, VS

0.72ct Orange Zircon, Oval, VS

6 x 4 mm (calibrated)

$ 10.76

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2.22ct Yellow Citrine, Trillion, VVS

2.22ct Yellow Citrine, Trillion, VVS

9 x 9 mm (calibrated)

$ 14.59

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1.33ct Yellow Citrine, Round, VVS

1.33ct Yellow Citrine, Round, VVS

7 mm (calibrated)

$ 9.27

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2.49ct Green Tourmaline, Emerald Cut, VVS

2.49ct Green Tourmaline, Emerald Cut, VVS

27.2 x 3.2 mm

$ 62.00

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5.51ct Black Star Diopside, Oval, Opaque

5.51ct Black Star Diopside, Oval, Opaque

11 x 9 mm (calibrated)

$ 27.44

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0.56ct Green Peridot, Marquise, VS

0.56ct Green Peridot, Marquise, VS

8 x 4 mm (calibrated)

$ 8.37

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1.38ctw Red Rhodolite Garnet, Square, VS

1.38ctw Red Rhodolite Garnet, Square, VS

5 x 5 mm (calibrated)

$ 12.08

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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

On the clarity options it goes "and better" so if youre looking for si specifically and you click si and better it still shows you basically everything. It just removes the opaques. Itd be nice if it was vs only, vss only, si only, etc

Posted By Iamnotakrustykrab in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

this site is awesome. I was able to look at the products think about purchasing and come back and find the same products. With the amount of inventory gem select has. Its awesome to be able to filter the way that they allow you too.

Posted By Tommyp in November, 2025
Source: Bizrate

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
Source: Bizrate

Overall Rating -> 10 star ratings

No problems. I had a minor address issue in the past and someone got back to me very quickly and we resolved the issue satisfactorily. I appreciated the quick, concerned response. So important when buyer/seller are so far apart in distance. Thank you Gem Select. Keep up the good work!

Posted By Orphanboy in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Everything was great, website user friendly, quality amazing, communication amazing, delivery amazing, everything was as expected, they done what they said they would, overall experience was amazing.

Posted By Jac in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Loved the price and the quality and the certification options which is the main reason why I buy. The guarantee is also a great reason to use gem select.

Posted By Sal in July, 2025
Source: Bizrate
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