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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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1.21ct Brown Color-Change Garnet, Cushion, VS

6.9 x 5.2 mm

$ 96.66

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1.76ct Yellow Citrine, Oval, VVS

9 x 7 mm (calibrated)

$ 12.27

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31.11ct Multicolor Jasper, Oval, Opaque

30.5 x 20.7 mm

$ 19.08

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5.02ctw Multicolor Labradorite, Round, Translucent

8 mm (calibrated)

$ 12.20

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0.81ct Yellow Citrine, Heart, VVS

6 x 6 mm (calibrated)

$ 6.46

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5.82ct Brown Smoky Quartz, Emerald Cut, VVS

12 x 12 mm (calibrated)

$ 24.42

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26.16ct Multicolor Tiger'S Eye Matrix, Cushion, Opaque

26.6 x 17.2 mm

$ 11.72

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6.61ct Violet Kunzite, Cushion, VS

14.4 x 8.1 mm

$ 181.06

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2.37ctw Red Pyrope Garnet, Marquise, VVS-VS

10.2 x 5.1 mm

$ 20.77

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5.29ct Multicolor Boulder Opal, Fancy, Opaque

17.4 x 12.2 mm

$ 21.95

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7.21ct Violet Amethyst, Pear Shape, Transparent

16 x 12 mm (calibrated)

$ 43.09

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1.17ct Pink Strawberry Quartz, Round, Transparent

7 mm (calibrated)

$ 10.26

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9.01ct Green Amazonite, Oval, Opaque

15.8 x 10.8 mm

$ 9.15

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3.31ctw Orange Citrine, Oval, VS

9 x 7 mm (calibrated)

$ 32.97

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1.63ctw Red Rhodolite Garnet, Square, VS

5 x 5 mm (calibrated)

$ 14.26

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4.33ct Orange Sunstone, Round, Translucent

11 mm (calibrated)

$ 26.43

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2.40ct Orange Hessonite Garnet, Oval, VS-SI

9 x 7.4 mm

$ 34.18

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25.40ct Black Tourmaline, Cushion, Opaque

21.2 x 16.5 mm

$ 126.49

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1.24ct Orange Moonstone, Marquise, Translucent

10 x 5 mm (calibrated)

$ 2.47

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1.86ct Green Sphene, Oval, Transparent

7.6 x 6.8 mm

$ 9.26

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30.61ct Gray Hematite, Pear Shape, Opaque

25 x 18 mm (calibrated)

$ 30.86

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5.24ct Brown Smoky Quartz, Emerald Cut, VS

11 x 11 mm (calibrated)

$ 28.70

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3.79ct Brown Tiger'S Eye, Oval, Opaque

12 x 8 mm (calibrated)

$ 1.73

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1.04ct Pink Strawberry Quartz, Oval, Translucent

8 x 6 mm (calibrated)

$ 13.15

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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

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

Good prices

Posted By TRM in October, 2025
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Overall Rating -> 10 star ratings

love the site, the experience and the products.

Posted By Ckingpots in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Good, hope gem quality is good and genuine

Posted By Varun in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Very good place to buy gemstones

Posted By Elansary in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I feel Gemselect is a trustworthy company to buy from

Posted By Becky in October, 2025
Source: Bizrate
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