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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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4.12ct Yellow Citrine, Oval, VVS

12 x 10 mm (calibrated)

$ 32.83

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4.14ctw Multicolor Spectrolite, Oval, Opaque

10 x 8 mm (calibrated)

$ 19.51

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1.98ct Orange Zircon, Oval, VS

8 x 6 mm (calibrated)

$ 54.23

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1.01ct Purple Rhodolite Garnet, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 26.83

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3.06ct Orange Sunstone, Oval, Transparent

11 x 9 mm (calibrated)

$ 18.41

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3.76ct Yellow Citrine, Cushion, VVS-VS

13.9 x 7.9 mm

$ 28.83

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1.84ct Orange Hessonite Garnet, Oval, VS-SI

8.2 x 6.6 mm

$ 32.74

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0.52ct Yellow Color-Change Garnet, Oval, VS-SI

6 x 4 mm (calibrated)

$ 42.73

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5.93ct Pink Morganite, Oval, Opaque

13 x 11 mm (calibrated)

$ 24.61

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45.93ct Violet Charoite, Fancy, Opaque

38.1 x 22.4 mm

$ 86.05

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37.59ct Multicolor Jasper, Pear Shape, Opaque

35.8 x 22.4 mm

$ 26.36

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16.59ct Multicolor Boulder Opal, Fancy, Opaque

29.3 x 14.7 mm

$ 82.62

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0.99ctw Red Pyrope Garnet, Square, VS

4.2 x 4.2 mm

$ 6.51

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20.07ct Violet Amethyst, Cushion, VVS

18 x 18 mm (calibrated)

$ 139.93

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6.47ct Turquoise Fluorite, Pear Shape, Transparent

12.5 x 9.9 mm

$ 16.30

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16.24ct Bi-Color Ametrine, Pear Shape, VVS

21.8 x 14.1 mm

$ 118.86

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3.78ct Yellow Citrine, Oval, VVS

12 x 10 mm (calibrated)

$ 30.12

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0.90ct Yellow Morganite, Pear Shape, VS

8.4 x 6 mm

$ 49.30

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3.20ct Yellow Citrine, Emerald Cut, VVS

10.1 x 9.4 mm

$ 17.53

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30.74ct Brown Tiger'S Eye, Fancy, Opaque

33.5 x 10.5 mm

$ 3.05

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2.58ct Pink Morganite, Oval, VVS-VS

10.2 x 7.5 mm

$ 128.48

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1.00ct Yellow Zircon, Oval, VS

5.8 x 4.9 mm

$ 24.90

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3.51ct Multicolor Labradorite, Pear Shape, Translucent

12 x 8 mm (calibrated)

$ 7.76

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0.72ct Yellow Citrine, Heart, VVS

6 x 6 mm (calibrated)

$ 5.74

View Gem
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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

Very neat and to the point

Posted By Botha in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Very good.

Posted By Tommy in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great site for finding specific stones and sizes for individual pieces of jewelry

Posted By Designer in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I have a beautiful emerald I purchased from a company names gemselect and they are awesome! You should try them out?

Posted By Lynn in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

easy site to navigate

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

Overall Rating -> 10 star ratings

On the clarity options it goes "and better" so if youre looking for si specifically and you click si and better it still shows you basically everything. It just removes the opaques. Itd be nice if it was vs only, vss only, si only, etc

Posted By Iamnotakrustykrab in December, 2025
Source: Bizrate
Enlarged Gemstone Image