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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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Yellow Untreated Gemstones
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22.48ctw Multicolor Labradorite, Pear Shape, Translucent

18 x 13 mm (calibrated)

$ 49.71

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1.18ct Yellow Beryl, Trillion, VS

8 x 8 mm (calibrated)

$ 28.20

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0.52ct Pink Morganite, Oval, VS

6.6 x 4.8 mm

$ 23.31

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5.08ct Brown Smoky Quartz, Round, VVS-VS

12 mm (calibrated)

$ 8.35

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22.71ct Multicolor Jasper, Fancy, Opaque

32.5 x 9.4 mm

$ 6.78

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1.99ct Orange Hessonite Garnet, Oval, VS-SI

8.4 x 7.1 mm

$ 39.64

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4.67ct Yellow Citrine, Oval, VVS-VS

12 x 10 mm (calibrated)

$ 35.81

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9.96ct Green Maw-Sit-Sit, Pear Shape, Opaque

16.8 x 11 mm

$ 32.74

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5.01ct Yellow Citrine, Oval, VS

12 x 10 mm (calibrated)

$ 30.36

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11.73ct Green Druzy Variscite, Fancy, Opaque

24.9 x 15.8 mm

$ 17.88

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3.27ct Yellow Citrine, Cushion, VVS-VS

13.4 x 7.6 mm

$ 25.08

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17.91ct White Rainbow Moonstone, Pear Shape, Translucent

21.7 x 13.3 mm

$ 124.87

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29.20ct Pink Rose Quartz, Oval, Transparent

28.5 x 16.3 mm

$ 47.99

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0.61ct Yellow Color-Change Diaspore, Emerald Cut, VS

5.7 x 5.1 mm

$ 23.12

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6.05ct Brown Smoky Quartz, Round, VVS-VS

13 mm (calibrated)

$ 9.95

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5.63ct Blue Aquamarine, Oval, Translucent

14 x 10 mm (calibrated)

$ 116.82

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31.26ct Multicolor Agate, Fancy, Opaque

23.7 x 11.2 mm

$ 54.75

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27.39ct White Scolecite, Cushion, Opaque

26.2 x 24 mm

$ 32.72

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12.81ctw Black Pietersite, Oval, Opaque

14 x 10 mm (calibrated)

$ 56.13

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1.21ct Pink Morganite, Pear Shape, VS

9.9 x 5.5 mm

$ 92.79

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4.08ct Violet Amethyst, Pear Shape, Transparent

14.1 x 9.4 mm

$ 24.39

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11.80ctw Green Amazonite, Cushion, Opaque

10 x 10 mm (calibrated)

$ 28.70

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0.63ct Yellow Color-Change Diaspore, Oval, VS

6.5 x 4.1 mm

$ 22.12

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22.05ct Gray Hematite, Square, Opaque

15 x 15 mm (calibrated)

$ 22.23

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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 -> 9 star ratings

Nothing bad to report. Everything is as expected. The gems and the price are all very good.

Posted By Dafanatic in August, 2025
Source: Bizrate

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 to use. No issues. Large selection of gems.

Posted By CLTCJH in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I love the product and the details about each of them.

Posted By Love It! in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

It was good. There was a large selection at prices I could afford.

Posted By Zorah in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Good. I ts very user friendly.

Posted By Shalini in June, 2025
Source: Bizrate
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