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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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Orange Untreated Gemstones
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Yellow Untreated Gemstones
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4.80ctw Orange Sunstone, Round, Translucent

9 mm (calibrated)

$ 28.39

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10.46ct Green Maw-Sit-Sit, Oval, Opaque

14.7 x 11.7 mm

$ 31.26

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2.83ct Yellow Citrine, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 15.50

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0.72ct Green Tourmaline, Emerald Cut, VVS

5.7 x 4 mm

$ 35.86

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2.39ct Pink Kunzite, Cushion, VVS

7.2 x 6.2 mm

$ 59.51

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2.28ct Brown Hessonite Garnet, Oval, VS-SI

9 x 7 mm (calibrated)

$ 41.62

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14.00ct Pink Rose Quartz, Oval, Transparent

17.8 x 14.6 mm

$ 76.69

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4.25ct Pink Strawberry Quartz, Oval, Translucent

11 x 9 mm (calibrated)

$ 32.60

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76.15ct Multicolor Jasper, Baguette, Opaque

35.3 x 23.3 mm

$ 45.05

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2.75ct Violet Amethyst, Trillion, VVS-VS

10 x 10 mm (calibrated)

$ 19.17

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1.96ct Pink Strawberry Quartz, Oval, Translucent

8 x 6 mm (calibrated)

$ 9.79

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1.66ctw Red Pyrope Garnet, Square, VS

5 x 5 mm (calibrated)

$ 12.73

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5.19ct Yellow Rutile Quartz, Oval, Transparent

13 x 9 mm (calibrated)

$ 14.23

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1.89ctw Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 41.42

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2.06ct Orange Hessonite Garnet, Round, VS

7.5 mm (calibrated)

$ 45.14

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1.26ct Yellow Citrine, Heart, VS

7 x 7 mm (calibrated)

$ 9.66

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11.60ct Multicolor Fire Agate, Fancy, Translucent

19.7 x 11.6 mm

$ 91.00

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8.41ctw Brown Tiger'S Eye, Round, Opaque

10 mm (calibrated)

$ 8.37

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25.05ct Brown Jasper, Fancy, Opaque

40.4 x 12.4 mm

$ 38.43

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4.62ct Red Rhodolite Garnet, Pear Shape, VVS-VS

12.6 x 8.6 mm

$ 191.73

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1.85ct Orange Hessonite Garnet, Cushion, VS-SI

8 x 6 mm (calibrated)

$ 27.51

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1.85ct Yellow Citrine, Round, VVS

8 mm (calibrated)

$ 12.90

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3.07ct Blue Kyanite, Cushion, SI

10.9 x 6.7 mm

$ 76.44

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23.00ct Green Aventurine, Oval, Translucent

27.6 x 16.1 mm

$ 22.91

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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

Everything was great, website user friendly, quality amazing, communication amazing, delivery amazing, everything was as expected, they done what they said they would, overall experience was amazing.

Posted By Jac in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I love the product and the details about each of them.

Posted By Love It! in July, 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

Overall Rating -> 10 star ratings

Took a chance on purchasing my gemstones from Gemselect and was impressed. 10/10

Posted By KT in September, 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

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

Posted By Jim in January, 2026
Source: Bizrate
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