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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 Treatment

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Multicolor Untreated Gemstones
Orange Untreated Gemstones
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Yellow Untreated Gemstones
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6.02ct Violet Amethyst, Oval, Transparent

14.5 x 11.3 mm

$ 29.98

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14.33ct White Rainbow Moonstone, Pear Shape, Translucent

23.4 x 14.8 mm

$ 99.91

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7.58ct Brown Smoky Quartz, Round, VVS-VS

13 mm (calibrated)

$ 12.46

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28.35ctw Multicolor Fossil Coral, Pear Shape, Opaque

22.7 x 14.3 mm

$ 62.12

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0.77ct Green Sphene, Oval, Transparent

6.2 x 4.8 mm

$ 3.83

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1.31ctw Orange Citrine, Oval, VS

7 x 5 mm (calibrated)

$ 13.05

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3.53ct Pink Morganite, Marquise, Transparent

16.4 x 7 mm

$ 38.68

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0.03ct Black Diamond, Round, Opaque

2 mm (calibrated)

$ 10.27

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8.68ctw Multicolor Labradorite, Baguette, Translucent

10 x 8 mm (calibrated)

$ 13.06

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1.35ct Pink Tourmaline, Emerald Cut, VS

7.6 x 4.8 mm

$ 97.62

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0.59ct Pink Tourmaline, Round, Transparent

5 mm (calibrated)

$ 23.51

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19.66ct Brown Tiger'S Eye, Baguette, Opaque

20 x 15 mm (calibrated)

$ 19.58

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4.95ct Pink Strawberry Quartz, Round, Translucent

11 mm (calibrated)

$ 37.96

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1.21ct Pink Strawberry Quartz, Oval, Transparent

7 x 5 mm (calibrated)

$ 6.04

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2.67ct Purple Rhodolite Garnet, Oval, VVS

9.1 x 6.5 mm

$ 106.37

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1.54ct Green Tourmaline, Emerald Cut, VVS-VS

16.2 x 3.7 mm

$ 38.35

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0.70ct Blue Kyanite, Round, SI

5 mm (calibrated)

$ 17.43

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4.55ctw Yellow Citrine, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 24.93

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3.45ctw Brown Tourmaline, Pear Shape, VS

8.1 x 5.4 mm

$ 137.32

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20.82ct Pink Rhodochrosite, Fancy, Opaque

23.7 x 14.4 mm

$ 57.03

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0.28ct Violet Iolite, Emerald Cut, VS

5 x 3 mm (calibrated)

$ 11.16

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1.71ct Orange Zircon, Round, VVS-VS

6.5 mm (calibrated)

$ 37.47

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4.85ctw Orange Moonstone, Cushion, Translucent

9 x 7 mm (calibrated)

$ 9.66

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1.10ct Purple Rhodolite Garnet, Oval, VS-SI

7 x 5 mm (calibrated)

$ 29.22

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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

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

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

Enjoy viewing the selections. Excellent product

Posted By ToRa.62 in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I liked the selection of gems, and price. I did not like your PayPal process. I already have a PP account and you want me to sign up for another.

Posted By CLTCJH in May, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Very good and simple exchange

Posted By Waylon in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Over pretty well experience the your website no complaints about it very easy reliable service provided

Posted By Blas in January, 2026
Source: Bizrate
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