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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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0.91ct Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 17.37

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4.96ctw Orange Sunstone, Oval, Transparent

10 x 8 mm (calibrated)

$ 38.04

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1.04ctw Green Peridot, Oval, Transparent

6 x 4.2 mm

$ 18.64

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2.83ctw Orange Moonstone, Cushion, Translucent

8 x 6 mm (calibrated)

$ 6.21

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2.61ct Pink Kunzite, Emerald Cut, VVS-VS

7.2 x 6.5 mm

$ 71.82

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41.83ct Multicolor Tiger'S Eye Matrix, Pear Shape, Opaque

34.8 x 28.5 mm

$ 23.75

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1.67ct Orange Hessonite Garnet, Oval, VS

7.9 x 6.4 mm

$ 33.27

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2.55ct Turquoise Grandidierite, Oval, Translucent

8.5 x 6.9 mm

$ 139.69

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9.42ct Violet Amethyst, Oval, Transparent

16 x 12 mm (calibrated)

$ 65.68

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1.49ct Orange Sunstone, Oval, Translucent

8 x 6 mm (calibrated)

$ 22.44

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1.66ct Red Almandine Garnet, Baguette, VVS

9.9 x 5 mm

$ 62.00

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1.95ct Green Tourmaline, Emerald Cut, VVS

18.3 x 3.7 mm

$ 64.09

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1.54ct Red Almandine Garnet, Baguette, VS

10 x 4.9 mm

$ 12.78

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2.86ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 21.93

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5.15ct Turquoise Aquamarine, Oval, Translucent

14 x 10 mm (calibrated)

$ 106.86

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24.86ct Black Obsidian, Pear Shape, Opaque

27 x 20 mm (calibrated)

$ 27.24

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2.14ct Orange Sunstone, Round, Translucent

8.5 mm (calibrated)

$ 12.80

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2.40ct Orange Hessonite Garnet, Oval, VS-SI

9 x 7.4 mm

$ 34.18

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41.90ct Brown Tiger'S Eye Matrix, Oval, Opaque

32.3 x 20.6 mm

$ 41.73

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25.89ct Turquoise Cat'S Eye Aquamarine, Oval, Translucent

20 x 15 mm (calibrated)

$ 283.65

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5.11ctw Multicolor Labradorite, Round, Translucent

8 mm (calibrated)

$ 12.42

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17.61ctw Brown Tiger'S Eye, Cushion, Opaque

14 x 12 mm (calibrated)

$ 19.29

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5.02ct Violet Amethyst, Oval, Transparent

12.8 x 10.4 mm

$ 30.00

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4.41ct Pink Rose Quartz, Emerald Cut, Transparent

9.5 x 9.5 mm

$ 24.16

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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

They have a wonderful selection of gems of all sorts, shapes, cuts, and quality. I am very particular about the quality of stones I buy, and found many with VVS clarity and excellent cut and polish. I am thrilled with each of the stones I purchased, and would definitely recommend GemSelect to everyone.

Posted By Debsarabs in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Good selection prices are reasonable!

Posted By ToRa62 in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Very good.

Posted By Tommy 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 -> 9 star ratings

Will know more once order received

Posted By Jim in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Recomendado Totalmente Los Productos Se Entregaron A Tiempo

Posted By Alexis in May, 2026
Source: Bizrate
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