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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
Untreated Gemstones Size
Untreated Gemstones Clarity
Untreated Gemstones Price
Untreated Gemstones Treatment

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1.08ct Purple Rhodolite Garnet, Oval, VS

1.08ct Purple Rhodolite Garnet, Oval, VS

7 x 5 mm (calibrated)

$ 28.68

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25.45ct Multicolor Tiger'S Eye Matrix, Pear Shape, Opaque

25.45ct Multicolor Tiger'S Eye Matrix, Pear Shape, Opaque

29.5 x 17.6 mm

$ 11.40

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21.69ct Green Jadeite, Fancy, Translucent

21.69ct Green Jadeite, Fancy, Translucent

28.9 x 15.4 mm

$ 12.83

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24.00ct Multicolor Rainbow Pyrite, Fancy, Opaque

24.00ct Multicolor Rainbow Pyrite, Fancy, Opaque

31.6 x 19.8 mm

$ 62.15

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0.58ct Green Peridot, Marquise, VVS-VS

0.58ct Green Peridot, Marquise, VVS-VS

8 x 4 mm (calibrated)

$ 8.67

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8.17ct Brown Smoky Quartz, Pear Shape, VVS

8.17ct Brown Smoky Quartz, Pear Shape, VVS

16 x 12 mm (calibrated)

$ 13.44

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33.60ct White Dendritic Agate, Fancy, Opaque

33.60ct White Dendritic Agate, Fancy, Opaque

28.3 x 17.4 mm

$ 23.42

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4.31ct White Rutile Quartz, Round, Transparent

4.31ct White Rutile Quartz, Round, Transparent

10 mm (calibrated)

$ 10.81

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2.32ctw Brown Moonstone, Flower Cut, Translucent

2.32ctw Brown Moonstone, Flower Cut, Translucent

8.4 x 8.2 mm

$ 10.17

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6.23ct Yellow Citrine, Oval, VVS

6.23ct Yellow Citrine, Oval, VVS

13.5 x 10.4 mm

$ 47.77

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8.51ct Yellow Rutile Quartz, Pear Shape, Transparent

8.51ct Yellow Rutile Quartz, Pear Shape, Transparent

18 x 13 mm (calibrated)

$ 23.12

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1.80ct White Topaz, Marquise, VS

1.80ct White Topaz, Marquise, VS

12.1 x 5.1 mm

$ 9.86

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13.36ct Multicolor Labradorite, Oval, Translucent

13.36ct Multicolor Labradorite, Oval, Translucent

18 x 13 mm (calibrated)

$ 29.54

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1.96ct Multicolor Spectrolite, Oval, Opaque

1.96ct Multicolor Spectrolite, Oval, Opaque

10 x 8 mm (calibrated)

$ 8.96

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7.04ct Yellow Rutile Quartz, Round, Transparent

7.04ct Yellow Rutile Quartz, Round, Transparent

13 mm (calibrated)

$ 24.45

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5.47ct Multicolor Agate, Sphere / Ball, Opaque
Agate Product Video (701053)

5.47ct Multicolor Agate, Sphere / Ball, Opaque

9 mm (calibrated)

$ 4.37

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0.89ct Green Tourmaline, Round, Transparent

0.89ct Green Tourmaline, Round, Transparent

6 mm (calibrated)

$ 14.75

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0.86ct Blue Kyanite, Oval, VS-SI

0.86ct Blue Kyanite, Oval, VS-SI

6.4 x 4.2 mm

$ 18.84

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5.16ct Green Malachite, Oval, Opaque

5.16ct Green Malachite, Oval, Opaque

10.5 x 8.3 mm

$ 3.95

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19.77ct Brown Moonstone, Oval, Opaque

19.77ct Brown Moonstone, Oval, Opaque

22.1 x 15.9 mm

$ 43.32

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5.04ct Violet Amethyst, Pear Shape, VS

5.04ct Violet Amethyst, Pear Shape, VS

15 x 10 mm (calibrated)

$ 38.33

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38.98ct White Aragonite, Baguette, Opaque

38.98ct White Aragonite, Baguette, Opaque

28.9 x 14.8 mm

$ 45.62

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43.87ct Multicolor Tiger'S Eye Matrix, Pear Shape, Opaque

43.87ct Multicolor Tiger'S Eye Matrix, Pear Shape, Opaque

38.3 x 22.5 mm

$ 19.66

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2.38ctw Violet Amethyst, Emerald Cut, Transparent

2.38ctw Violet Amethyst, Emerald Cut, Transparent

7 x 5 mm (calibrated)

$ 14.23

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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

All items were delivered on time with all items meeting or exceeding my expectations. Cut, clarity and color were very close to the photos and description.

Posted By Bob D in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Found a beautiful opal at a great price. I was not disappointed when it arrived. Even better in person.

Posted By Fried Rice in August, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

It was fine . Wish there had been more round stones to select from

Posted By Emm in January, 2026
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

My whole experience is great.

Posted By Ghs in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great prices!!! High quality gemstones.

Posted By Ricky in October, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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