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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
Untreated Gemstones Clarity
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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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9.82ct Multicolor Agate, Oval, Opaque

13.7 x 11.5 mm

$ 16.62

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5.00ct Black Star Diopside, Oval, Opaque

11 x 9 mm (calibrated)

$ 24.90

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2.00ct Green Sphene, Oval, Transparent

7.7 x 6.8 mm

$ 10.96

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7.98ct White Quartz Cat'S Eye, Round, Transparent

12 mm (calibrated)

$ 28.34

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7.34ct Brown Smoky Quartz, Emerald Cut, VVS

12 x 12 mm (calibrated)

$ 40.21

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1.27ct Green Tourmaline, Round, VVS

6.5 mm (calibrated)

$ 147.57

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13.40ct Green Prehnite, Fancy, Translucent

16 x 12 mm (calibrated)

$ 22.02

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7.21ctw Multicolor Pietersite, Pear Shape, Opaque

17.5 x 9.2 mm

$ 16.87

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26.30ct Yellow Rutile Quartz, Fancy, Transparent

16.6 x 16 mm

$ 311.28

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1.00ct Yellow Beryl, Oval, VVS

8 x 6 mm (calibrated)

$ 19.92

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1.92ct Red Almandine Garnet, Baguette, VVS

10 x 5 mm

$ 15.94

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44.82ct Multicolor Jasper, Oval, Opaque

33.9 x 19.4 mm

$ 49.10

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24.20ctw Multicolor Jasper, Oval, Opaque

24.1 x 15 mm

$ 14.23

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2.68ctw White Topaz, Cushion, VVS-VS

4.5 x 4.5 mm

$ 14.68

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1.20ctw Orange Zircon, Oval, VVS-VS

5 x 4 mm (calibrated)

$ 29.88

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0.92ct Yellow Citrine, Heart, Transparent

6 x 6 mm (calibrated)

$ 5.35

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1.92ct Orange Hessonite Garnet, Oval, VS-SI

8.4 x 6.8 mm

$ 33.52

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5.86ct Violet Amethyst, Cushion, VVS

15.1 x 9.1 mm

$ 40.85

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37.26ct Multicolor Tiger'S Eye Matrix, Oval, Opaque

34 x 20 mm

$ 21.52

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4.46ctw Red Rhodolite Garnet, Oval, VS

7 x 5.2 mm

$ 94.85

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23.30ct White Rainbow Moonstone, Oval, Opaque

25.2 x 16.1 mm

$ 185.65

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3.90ct Multicolor Ruby In Fuchsite, Marquise, Translucent

17.9 x 9.3 mm

$ 26.19

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2.61ct Multicolor Labradorite, Pear Shape, Translucent

10 x 7 mm (calibrated)

$ 5.77

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5.89ctw Orange Sunstone, Round, Translucent

10 mm (calibrated)

$ 34.32

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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

Very good and simple exchange

Posted By Waylon in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

IT WAS GREAT SIMPLE I WAS ABLE TO MAKE AN ACCOUNT EASY AND WAS ABLE TO FAVORITE ALL OF MY FINAL SELECTED GEMS, I JUST LOVE IT.

Posted By YE in October, 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

Always get a nice gemstone. Just like the picture. Never disappointed

Posted By Ron T in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Good, hope gem quality is good and genuine

Posted By Varun in May, 2026
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
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