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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
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Untreated Gemstones Price
Untreated Gemstones Treatment

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1.00ct Pink Tourmaline, Round, Transparent

1.00ct Pink Tourmaline, Round, Transparent

6 mm (calibrated)

$ 16.58

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4.01ct Green Fluorite, Marquise, Transparent

4.01ct Green Fluorite, Marquise, Transparent

12 x 8 mm (calibrated)

$ 16.49

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20.70ct White Howlite, Pear Shape, Opaque

20.70ct White Howlite, Pear Shape, Opaque

27.2 x 18.3 mm

$ 9.90

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3.07ct Violet Amethyst, Trillion, VVS-VS

3.07ct Violet Amethyst, Trillion, VVS-VS

10 x 10 mm (calibrated)

$ 20.18

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49.30ct Bi-Color Ametrine, Oval, VVS

49.30ct Bi-Color Ametrine, Oval, VVS

27 x 20 mm (calibrated)

$ 270.07

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3.52ctw Red Pyrope Garnet, Square, VS

3.52ctw Red Pyrope Garnet, Square, VS

4 x 4 mm (calibrated)

$ 26.99

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0.87ct Brown Tiger'S Eye, Pear Shape, Opaque

0.87ct Brown Tiger'S Eye, Pear Shape, Opaque

6.1 x 5.7 mm

$ 1.13

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2.96ct Violet Amethyst, Trillion, VS

2.96ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 23.59

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1.52ct Orange Hessonite Garnet, Oval, VS

1.52ct Orange Hessonite Garnet, Oval, VS

8 x 6 mm (calibrated)

$ 30.28

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1.25ct Yellow Golden Beryl, Oval, VS

1.25ct Yellow Golden Beryl, Oval, VS

8 x 6 mm (calibrated)

$ 34.25

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5.64ctw Violet Amethyst, Trillion, VS

5.64ctw Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 39.33

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8.93ctw Green Prehnite, Oval, Transparent/Translucent

8.93ctw Green Prehnite, Oval, Transparent/Translucent

8.5 x 7.2 mm

$ 48.92

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2.83ctw White Rainbow Moonstone, Square, Transparent

2.83ctw White Rainbow Moonstone, Square, Transparent

3 x 3 mm (calibrated)

$ 44.70

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1.93ct Yellow Beryl, Round, VVS-VS

1.93ct Yellow Beryl, Round, VVS-VS

8 mm (calibrated)

$ 46.13

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1.20ct Green Tourmaline, Baguette, VVS

1.20ct Green Tourmaline, Baguette, VVS

11.3 x 3.3 mm

$ 41.83

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1.50ct Yellow Beryl, Trillion, VS

1.50ct Yellow Beryl, Trillion, VS

8 x 8 mm (calibrated)

$ 35.86

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1.83ct Yellow Citrine, Emerald Cut, VVS-VS

1.83ct Yellow Citrine, Emerald Cut, VVS-VS

8 x 6 mm (calibrated)

$ 11.42

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7.15ct Yellow Apatite, Pear Shape, VS
Apatite Product Video (384013)

7.15ct Yellow Apatite, Pear Shape, VS

14 x 11.5 mm

$ 235.01

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9.39ct Green Serpentine, Oval, Translucent

9.39ct Green Serpentine, Oval, Translucent

19.3 x 11.7 mm

$ 20.11

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0.46ctw Blue Kyanite, Round, VS-SI

0.46ctw Blue Kyanite, Round, VS-SI

3.5 mm (calibrated)

$ 8.25

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0.98ct Red Rhodolite Garnet, Emerald Cut, VS

0.98ct Red Rhodolite Garnet, Emerald Cut, VS

5.1 x 4.5 mm

$ 36.60

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24.38ct Brown Moonstone, Oval, Opaque

24.38ct Brown Moonstone, Oval, Opaque

21.8 x 16.1 mm

$ 32.06

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1.38ct Multicolor Labradorite, Marquise, Translucent

1.38ct Multicolor Labradorite, Marquise, Translucent

10 x 5 mm (calibrated)

$ 3.05

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0.86ct Yellow Color-Change Diaspore, Emerald Cut, VS

0.86ct Yellow Color-Change Diaspore, Emerald Cut, VS

5.6 x 5.4 mm

$ 42.40

View Gem
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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 purchased from you before and I have never been disappointed. I always received what I expected and your products are very nice.

Posted By MVK in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I needed a very specific color of tourmaline and Gem Select had it. I had to get the client to agree and then ordered the stone. It arrived better than pictured and we all were very happy.

Posted By Tim W in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I loved it! Extensive inventory, great prices, I definitely will be buying from here again!

Posted By Lex in April, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

Good prices

Posted By TRM in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

So far So good

Posted By VH-1 in July, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Ita's a pretty good and simple way to find gems that youa're looking for amazing selection

Posted By Amman in May, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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