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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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1.40ct Yellow Citrine, Emerald Cut, VVS-VS

1.40ct Yellow Citrine, Emerald Cut, VVS-VS

8 x 6 mm (calibrated)

$ 11.16

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1.92ct Brown Tiger'S Eye, Baguette, Opaque

1.92ct Brown Tiger'S Eye, Baguette, Opaque

8 x 6 mm (calibrated)

$ 1.91

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5.06ctw Yellow Citrine, Square, VVS-VS

5.06ctw Yellow Citrine, Square, VVS-VS

8 x 8 mm (calibrated)

$ 38.80

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10.75ct Brown Smoky Quartz, Round, VVS

10.75ct Brown Smoky Quartz, Round, VVS

14 mm (calibrated)

$ 20.02

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67.40ct Green Amazonite, Square, Opaque

67.40ct Green Amazonite, Square, Opaque

24.9 x 24.8 mm

$ 39.16

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0.94ct Orange Zircon, Oval, VS

0.94ct Orange Zircon, Oval, VS

5 x 5 mm (calibrated)

$ 14.04

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1.96ct Orange Hessonite Garnet, Oval, VS

1.96ct Orange Hessonite Garnet, Oval, VS

8.3 x 6.8 mm

$ 33.91

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2.42ct Yellow Sphene, Oval, Transparent

2.42ct Yellow Sphene, Oval, Transparent

8.1 x 6.8 mm

$ 12.05

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1.46ctw Red Rhodolite Garnet, Square, VS

1.46ctw Red Rhodolite Garnet, Square, VS

5 x 5 mm (calibrated)

$ 12.79

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2.03ct Orange Hessonite Garnet, Cushion, VS

2.03ct Orange Hessonite Garnet, Cushion, VS

8 x 6 mm (calibrated)

$ 30.19

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25.07ct Multicolor Tiger'S Eye Matrix, Pear Shape, Opaque

25.07ct Multicolor Tiger'S Eye Matrix, Pear Shape, Opaque

29.1 x 20.3 mm

$ 24.97

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10.00ct Green Peridot, Pear Shape, VVS-VS
Peridot Product Video (746916)

10.00ct Green Peridot, Pear Shape, VVS-VS

14 x 14 mm (calibrated)

$ 2,490.00

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0.99ct Pink Morganite, Oval, VS

0.99ct Pink Morganite, Oval, VS

7.1 x 5.9 mm

$ 43.38

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1.03ct Green Peridot, Emerald Cut, VS

1.03ct Green Peridot, Emerald Cut, VS

7 x 5 mm (calibrated)

$ 15.39

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6.93ct Multicolor Ruby-Zoisite, Marquise, Opaque

6.93ct Multicolor Ruby-Zoisite, Marquise, Opaque

23.3 x 9.2 mm

$ 20.88

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1.56ctw Yellow Sphene, Oval, Transparent

1.56ctw Yellow Sphene, Oval, Transparent

6.2 x 5 mm

$ 7.77

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0.56ct Green Sphene, Oval, VS

0.56ct Green Sphene, Oval, VS

5.8 x 3.8 mm

$ 18.41

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1.47ct Yellow Citrine, Emerald Cut, VVS

1.47ct Yellow Citrine, Emerald Cut, VVS

8 x 6 mm (calibrated)

$ 11.71

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38.00ct Red Star Garnet, Oval, Opaque

38.00ct Red Star Garnet, Oval, Opaque

20 x 15 mm (calibrated)

$ 37.47

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0.70ct Yellow Chrysoberyl Cat'S Eye, Oval, Translucent

0.70ct Yellow Chrysoberyl Cat'S Eye, Oval, Translucent

4.1 x 3.7 mm

$ 20.92

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1.85ct Multicolor Labradorite, Pear Shape, Translucent

1.85ct Multicolor Labradorite, Pear Shape, Translucent

9 x 6 mm (calibrated)

$ 4.09

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23.25ctw Yellow Rutile Quartz, Sphere / Ball, Transparent

23.25ctw Yellow Rutile Quartz, Sphere / Ball, Transparent

12 mm (calibrated)

$ 25.48

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12.80ctw White Quartz Cat'S Eye, Round, Transparent

12.80ctw White Quartz Cat'S Eye, Round, Transparent

11 mm (calibrated)

$ 45.58

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1.46ctw White Rainbow Moonstone, Pear Shape, Transparent

1.46ctw White Rainbow Moonstone, Pear Shape, Transparent

5 x 5 mm (calibrated)

$ 27.19

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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!

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I've purchased from here many times over the last decade+. I find the information easy to understand, helpful, and interesting. I have always been satisfied that I got exactly what I ordered. Pictures and descriptions are clear and unique to each stone.

Posted By Maggie in August, 2025
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Overall Rating -> 10 star ratings

I was looking for high-quality amethyst on this site, and I was able to compare size, color, and weight in detail before making a purchase.

Posted By Atsuhisa in January, 2026
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Overall Rating -> 10 star ratings

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

Posted By Love It! in July, 2025
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