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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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Yellow Untreated Gemstones
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16.83ct Multicolor Labradorite, Pear Shape, Transparent/Translucent

20 x 15 mm (calibrated)

$ 37.21

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0.03ct White Diamond, Round, VVS

2 mm (calibrated)

$ 68.48

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3.96ctw Multicolor Labradorite, Square, Transparent

7 x 7 mm (calibrated)

$ 5.96

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0.96ct Yellow Citrine, Cushion, VVS

8 x 6 mm (calibrated)

$ 7.17

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11.52ct Pink Rose Quartz, Emerald Cut, Transparent

14 x 14 mm (calibrated)

$ 63.10

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12.58ct Multicolor Jasper, Oval, Opaque

25 x 18 mm (calibrated)

$ 27.57

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11.86ctw Violet Amethyst, Cushion, VVS

15.1 x 9.1 mm

$ 82.68

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1.55ct Yellow Golden Beryl, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 37.36

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4.68ct Pink Rose Quartz, Emerald Cut, Transparent

10 x 10 mm (calibrated)

$ 25.64

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0.92ct Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 18.33

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0.20ct White Diamond, Round, VVS-VS

3.7 mm

$ 335.79

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25.06ct Multicolor Tiger'S Eye Matrix, Oval, Opaque

27.6 x 15.3 mm

$ 11.24

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56.03ct Multicolor Jasper, Oval, Opaque

42 x 25.4 mm

$ 61.39

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30.12ct Brown Moonstone, Oval, Opaque

22.4 x 16.3 mm

$ 65.99

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10.52ct Brown Smoky Quartz, Round, Transparent

16 mm (calibrated)

$ 34.58

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0.82ct Purple Spinel, Cushion, VVS-VS

5.7 x 5.7 mm

$ 49.12

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0.90ct Yellow Morganite, Pear Shape, VS

8 x 6 mm (calibrated)

$ 39.44

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15.82ct Multicolor Agate, Oval, Opaque

15.7 x 13.9 mm

$ 26.78

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1.82ct Pink Tourmaline, Oval, VS

9 x 7 mm (calibrated)

$ 211.48

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0.95ct Yellow Citrine, Trillion, VS

7 x 7 mm (calibrated)

$ 7.29

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4.87ct Violet Amethyst, Pear Shape, VVS-VS

15 x 10 mm (calibrated)

$ 37.35

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21.86ct Turquoise Amazonite, Cushion, Translucent

19.4 x 14 mm

$ 18.68

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35.56ct Multicolor Jasper, Fancy, Opaque

36.6 x 11.3 mm

$ 7.08

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34.22ct Multicolor Pietersite, Oval, Opaque

30 x 22 mm (calibrated)

$ 87.35

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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

The website was easy to use and informative of the selection of stones it has. I quickly found the right stone for me.

Posted By Guero in March, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

I think therea's no problem

Posted By Napoleon 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

It was easy to navigate

Posted By GemGod in July, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

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

Posted By Ray in November, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

I did not realize these stones were of jewelry quality. They are really beautiful, just not what I was expecting which was more of a natural stone.

Posted By Jewelry Quality Stones in July, 2025
Source: Bizrate
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