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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
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2.90ct Green Malachite, Oval, Opaque

9 x 7 mm (calibrated)

$ 2.22

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1.38ct Green Tourmaline, Emerald Cut, VS

22.2 x 3.1 mm

$ 36.29

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1.39ct Yellow Citrine, Round, VVS

7 mm (calibrated)

$ 11.07

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23.48ct Bi-Color Ametrine, Pear Shape, VVS-VS

22 x 18.7 mm

$ 163.70

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1.59ct Green Sphene, Oval, Transparent

7.5 x 5.6 mm

$ 8.72

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2.76ct Yellow Rutile Quartz, Pear Shape, Transparent

10 x 7 mm (calibrated)

$ 7.44

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26.36ct White Dendritic Agate, Pear Shape, Opaque

31.8 x 20.6 mm

$ 18.38

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1.69ct Orange Hessonite Garnet, Oval, VVS-VS

7.8 x 6.4 mm

$ 27.78

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1.88ct Red Almandine Garnet, Heart, VS

7.7 x 7.4 mm

$ 54.61

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10.04ct Green Bloodstone, Pear Shape, Opaque

16 x 12 mm (calibrated)

$ 38.50

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22.77ct Purple Ruby-Zoisite, Flower Cut, Opaque

18 x 15.8 mm

$ 27.67

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3.69ctw Orange Hessonite Garnet, Emerald Cut, VS

5 x 5 mm (calibrated)

$ 72.77

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1.08ct Gray Sillimanite Cat'S Eye, Oval, Transparent

7 x 5.6 mm

$ 3.38

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4.51ctw White Topaz, Square, VVS-VS

4 x 4 mm (calibrated)

$ 36.32

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5.19ct Multicolor Labradorite, Marquise, Translucent

16 x 8 mm (calibrated)

$ 11.47

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5.90ct White Topaz, Cushion, VVS-VS

12 x 10 mm (calibrated)

$ 39.18

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17.89ct Turquoise Larimar, Oval, Opaque

20 x 15 mm (calibrated)

$ 231.39

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1.51ct Orange Zircon, Round, VS

6.5 mm (calibrated)

$ 33.08

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22.63ct Gray Hematite, Baguette, Opaque

17.1 x 13.3 mm

$ 18.38

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8.27ct Multicolor Agate, Round, Opaque

12 mm (calibrated)

$ 14.00

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0.03ct Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 10.27

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7.87ct Brown Smoky Quartz, Emerald Cut, VVS

12 x 12 mm (calibrated)

$ 14.04

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2.29ct Turquoise Grandidierite, Oval, SI

9 x 7 mm (calibrated)

$ 100.36

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1.84ct Green Tourmaline, Emerald Cut, VS

17.3 x 3.7 mm

$ 48.39

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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 -> 10 star ratings

easy site to navigate

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

Overall Rating -> 10 star ratings

I can pick and choose from large selection and find just what I need for .y projects, currently my cane.

Posted By Darkstar731 in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I could see the actual gem I was buying

Posted By Bugs in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very pleasant

Posted By Varun in June, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Plan on purchasing on an ongoing basis. So far.....so good....

Posted By Jim in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Recomendado Totalmente Los Productos Se Entregaron A Tiempo

Posted By Alexis in May, 2026
Source: Bizrate
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