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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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36.68ct Brown Tiger'S Eye, Fancy, Opaque

36.68ct Brown Tiger'S Eye, Fancy, Opaque

36.9 x 11 mm

$ 3.65

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0.82ct Orange Morganite, Pear Shape, VS

0.82ct Orange Morganite, Pear Shape, VS

8 x 6 mm (calibrated)

$ 36.75

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1.48ct Orange Hessonite Garnet, Oval, VVS-VS

1.48ct Orange Hessonite Garnet, Oval, VVS-VS

7.4 x 6.2 mm

$ 22.61

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29.73ct Multicolor Jasper, Pear Shape, Opaque

29.73ct Multicolor Jasper, Pear Shape, Opaque

32.3 x 20.1 mm

$ 25.08

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3.17ct Yellow Citrine, Oval, VVS-VS

3.17ct Yellow Citrine, Oval, VVS-VS

12 x 8 mm (calibrated)

$ 24.31

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12.26ct Brown Tiger'S Eye, Sphere / Ball, Opaque

12.26ct Brown Tiger'S Eye, Sphere / Ball, Opaque

12 mm (calibrated)

$ 12.31

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0.48ct Yellow Citrine, Marquise, VVS-VS

0.48ct Yellow Citrine, Marquise, VVS-VS

8 x 4 mm (calibrated)

$ 3.34

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4.46ct Green Jade, Oval, Opaque

4.46ct Green Jade, Oval, Opaque

12 x 10 mm (calibrated)

$ 8.88

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25.42ctw Multicolor Labradorite, Round, Translucent

25.42ctw Multicolor Labradorite, Round, Translucent

20 mm (calibrated)

$ 55.69

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2.30ct Blue Chalcedony, Oval, Transparent

2.30ct Blue Chalcedony, Oval, Transparent

10 x 8 mm (calibrated)

$ 4.58

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7.09ct Violet Amethyst, Pear Shape, VS

7.09ct Violet Amethyst, Pear Shape, VS

16 x 12 mm (calibrated)

$ 54.37

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1.06ct Green Tourmaline, Emerald Cut, VVS-VS

1.06ct Green Tourmaline, Emerald Cut, VVS-VS

13.7 x 3.1 mm

$ 26.39

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10.93ct Brown Tiger'S Eye, Flower Cut, Opaque

10.93ct Brown Tiger'S Eye, Flower Cut, Opaque

15 x 15 mm (calibrated)

$ 14.38

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5.70ct Yellow Citrine, Briolette, VVS
Citrine Product Video (367634)

5.70ct Yellow Citrine, Briolette, VVS

13.7 x 8.4 mm

$ 31.91

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11.50ct Violet Amethyst, Cushion, VVS

11.50ct Violet Amethyst, Cushion, VVS

15 x 15 mm (calibrated)

$ 80.18

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3.57ctw Yellow Citrine, Oval, VS

3.57ctw Yellow Citrine, Oval, VS

9.1 x 6.6 mm

$ 27.38

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34.00ct Multicolor Jasper, Oval, Opaque

34.00ct Multicolor Jasper, Oval, Opaque

30 x 22 mm (calibrated)

$ 16.39

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11.83ct Green Amazonite, Pear Shape, Opaque

11.83ct Green Amazonite, Pear Shape, Opaque

25.9 x 13.3 mm

$ 12.02

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12.74ct Multicolor Chocolate Opal, Oval, Opaque

12.74ct Multicolor Chocolate Opal, Oval, Opaque

18.5 x 15.1 mm

$ 317.23

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2.32ct Multicolor Labradorite, Pear Shape, Translucent

2.32ct Multicolor Labradorite, Pear Shape, Translucent

10 x 7 mm (calibrated)

$ 5.13

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3.90ct Pink Strawberry Quartz, Oval, Translucent

3.90ct Pink Strawberry Quartz, Oval, Translucent

10 x 8 mm (calibrated)

$ 29.91

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2.38ct Pink Tourmaline, Emerald Cut, VS-SI

2.38ct Pink Tourmaline, Emerald Cut, VS-SI

8.8 x 5.4 mm

$ 104.30

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1.45ct White Topaz, Marquise, VVS

1.45ct White Topaz, Marquise, VVS

11.6 x 5.1 mm

$ 10.11

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3.12ct Violet Amethyst, Trillion, VS

3.12ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 20.51

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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 -> 9 star ratings

If you have motion picture, then I will be more satisfied with.

Posted By Ray in November, 2025
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Overall Rating -> 10 star ratings

Was a good experience.

Posted By Tim in July, 2025
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Overall Rating -> 8 star ratings

Site worked well and helped me find a rock that matched what I was looking for. Well within budget and I trust it will show up, so that's definitely positive. Not much else to it. Satisfied.

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

I have a beautiful emerald I purchased from a company names gemselect and they are awesome! You should try them out?

Posted By Lynn in September, 2025
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Overall Rating -> 10 star ratings

I always purchase my stones from GemSelect, their products are high quality and customer service is always great. I also like the fact that I am able to purchase unique items

Posted By Desperaux in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

easy site to navigate

Posted By Curt's Cabochons in June, 2025
Source: Bizrate
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