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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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Yellow Untreated Gemstones
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0.93ct Yellow Color-Change Diaspore, Marquise, VS

10.8 x 4.7 mm

$ 49.94

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3.23ctw Purple Rhodolite Garnet, Round, VS

5 mm (calibrated)

$ 70.77

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2.31ctw White Rainbow Moonstone, Oval, Transparent

7 x 5.9 mm

$ 75.95

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2.46ct Multicolor Labradorite, Marquise, Translucent

12 x 6 mm (calibrated)

$ 4.32

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0.95ct Yellow Morganite, Cushion, VS

6 x 6 mm (calibrated)

$ 57.25

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1.02ct Orange Zircon, Oval, VVS-VS

5.9 x 5 mm

$ 15.24

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1.00ctw Green Peridot, Marquise, VVS-VS

8.1 x 4.1 mm

$ 8.76

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2.62ct Orange Spessartite Garnet, Oval, Transparent

9 x 7.4 mm

$ 65.24

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0.40ct Green Kornerupine, Pear Shape, VVS

5.7 x 4.1 mm

$ 34.26

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0.41ct Yellow Citrine, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 2.86

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2.79ctw White Topaz, Cushion, VVS-VS

4.6 x 4.6 mm

$ 15.29

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2.09ct Violet Amethyst, Marquise, VVS

20.3 x 5.1 mm

$ 14.57

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6.88ct Green Druzy Variscite, Fancy, Opaque

19.1 x 12.4 mm

$ 7.06

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3.48ctw White Rainbow Moonstone, Pear Shape, Transparent

5 x 5 mm (calibrated)

$ 57.77

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15.95ct Yellow Citrine, Trillion, VVS

18 x 18 mm (calibrated)

$ 132.39

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3.81ctw White Rainbow Moonstone, Pear Shape, Transparent

5 x 5 mm (calibrated)

$ 59.27

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2.82ctw Yellow Citrine, Emerald Cut, VVS

8 x 6 mm (calibrated)

$ 22.47

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1.81ctw Green Demantoid Garnet, Oval, VS-SI

5.2 x 4.1 mm

$ 198.30

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9.66ctw Yellow Citrine, Oval, VVS-VS

12 x 10 mm (calibrated)

$ 74.09

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14.43ct Multicolor Quartz With Marcasite, Oval, Transparent

20 x 15 mm (calibrated)

$ 94.86

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1.31ct Pink Tourmaline, Oval, Transparent

8 x 6 mm (calibrated)

$ 22.46

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1.95ct Orange Zircon, Oval, VVS

8 x 6 mm (calibrated)

$ 53.42

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3.01ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 23.09

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1.58ct Orange Hessonite Garnet, Cushion, VS

6 x 6 mm (calibrated)

$ 24.14

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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 picking, fast checkout, secure shipping. Cana't ask for anything more than efficiency and a good price.

Posted By Beman in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I was looking for high-quality amethyst on this site, and I was able to compare size, color, and weight in detail before making a purchase.

Posted By Atsuhisa in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Very good place to buy gemstones

Posted By Elansary in March, 2026
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Overall Rating -> 8 star ratings

It was a good interaction I got a good gemstone for cheap

Posted By Jon in December, 2025
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Overall Rating -> 10 star ratings

Love how easy the site is to use. Really love that the pictures are of actual product.

Posted By LeAnn in January, 2026
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Overall Rating -> 10 star ratings

Enjoy every moment

Posted By Ferns in October, 2025
Source: Bizrate
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