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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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6.34ct White Dendritic Agate, Pear Shape, Opaque

16 x 12 mm (calibrated)

$ 5.05

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3.53ct Yellow Citrine, Square, VS

9 x 9 mm (calibrated)

$ 23.21

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2.33ct Blue Chalcedony, Oval, Transparent

10 x 8 mm (calibrated)

$ 4.64

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1.77ctw Red Pyrope Garnet, Square, VS

5 x 5 mm (calibrated)

$ 13.58

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2.49ct Pink Strawberry Quartz, Round, Transparent

9 mm (calibrated)

$ 20.33

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13.32ct Green Jadeite, Oval, Translucent

20.4 x 16.2 mm

$ 29.18

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1.07ct Green Sphene, Oval, Transparent

6.5 x 5.5 mm

$ 5.87

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28.64ctw Multicolor Jasper, Marquise, Opaque

30.9 x 15.1 mm

$ 49.89

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0.75ct Green Peridot, Pear Shape, VVS-VS

7 x 5 mm (calibrated)

$ 5.23

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2.70ct Orange Hessonite Garnet, Oval, VS-SI

9.1 x 7.6 mm

$ 59.16

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3.95ctw Red Almandine Garnet, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 147.53

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37.80ct Green Bloodstone, Oval, Opaque

28.8 x 18.5 mm

$ 56.47

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4.13ct Yellow Citrine, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 31.99

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1.24ctw Red Pyrope Garnet, Heart, VS

5 x 5 mm (calibrated)

$ 30.88

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7.70ctw Multicolor Labradorite, Marquise, Translucent

14 x 7 mm (calibrated)

$ 17.02

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15.41ct Green Opal, Pear Shape, Opaque

21.3 x 16.2 mm

$ 33.00

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0.47ct Violet Amethyst, Emerald Cut, VS

6 x 4 mm (calibrated)

$ 2.73

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8.91ct Brown Tiger'S Eye, Cushion, Opaque

14 x 12 mm (calibrated)

$ 8.87

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0.96ct Yellow Color-Change Diaspore, Cushion, VVS-VS

6.1 x 5.1 mm

$ 50.68

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83.50ct Pink Rose Quartz, Pear Shape, Transparent

32.2 x 26.1 mm

$ 182.97

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14.32ct Orange Citrine, Fancy, VS

17 x 15.1 mm

$ 95.08

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7.18ct Orange Moonstone, Oval, Translucent

16 x 12 mm (calibrated)

$ 14.38

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1.03ct Brown Color-Change Garnet, Cushion, VVS-VS

6.2 x 4.8 mm

$ 82.29

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27.79ct Brown Tiger'S Eye Matrix, Pear Shape, Opaque

34.2 x 18.5 mm

$ 15.78

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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

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

Overall Rating -> 10 star ratings

Loved the price and the quality and the certification options which is the main reason why I buy. The guarantee is also a great reason to use gem select.

Posted By Sal in July, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

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

Posted By Jon in December, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Always a good quality stone. Priced fairly and shipped promptly. Answers emails quickly

Posted By Ron T in November, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

It was great!

Posted By Annie in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

The website was very easy to use.

Posted By Garnet in January, 2026
Source: Bizrate
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