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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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Yellow Untreated Gemstones
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0.90ctw Yellow Citrine, Heart, VVS-VS

5 x 5 mm (calibrated)

$ 5.98

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7.07ctw Yellow Citrine, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 49.29

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3.13ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 24.00

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3.83ctw Red Pyrope Garnet, Marquise, VS

12.1 x 6 mm

$ 33.57

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4.21ct Pink Morganite, Oval, Transparent

12.8 x 9.9 mm

$ 46.12

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8.85ct White Rainbow Moonstone, Marquise, Transparent

22.7 x 10.7 mm

$ 158.66

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3.92ct Pink Kunzite, Cushion, VVS

10 x 7 mm (calibrated)

$ 97.61

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0.53ct Pink Spinel, Cushion, VS

5.3 x 4 mm

$ 36.95

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13.27ct Green Maw-Sit-Sit, Round, Opaque

13 mm (calibrated)

$ 30.98

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1.41ct Orange Hessonite Garnet, Emerald Cut, VS

7 x 5 mm (calibrated)

$ 20.97

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1.33ct Yellow Citrine, Baguette, VS

9.8 x 5 mm

$ 10.20

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2.37ct Orange Sunstone, Oval, Translucent

10.3 x 8.4 mm

$ 14.16

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21.04ct White Rainbow Moonstone, Pear Shape, Translucent

24.7 x 14.3 mm

$ 146.69

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0.72ct White Rainbow Moonstone, Baguette, Transparent

6.9 x 4.7 mm

$ 25.10

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20.54ct White Howlite, Fancy, Opaque

24.2 x 19.1 mm

$ 9.82

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0.49ct Gray Cat'S Eye Alexandrite, Oval, Opaque

5.3 x 3.7 mm

$ 81.34

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58.74ct Multicolor Jasper, Baguette, Opaque

37.4 x 18.8 mm

$ 58.51

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4.01ct Pink Strawberry Quartz, Oval, Translucent

10 x 8 mm (calibrated)

$ 30.76

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1.77ctw Yellow Morganite, Pear Shape, VS

8 x 6 mm (calibrated)

$ 96.96

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2.18ct Yellow Citrine, Trillion, VVS-VS

9 x 9 mm (calibrated)

$ 11.80

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2.98ct Yellow Citrine, Oval, VVS

10 x 8 mm (calibrated)

$ 16.33

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17.57ct Purple Ruby-Zoisite, Flower Cut, Opaque

17.1 x 16 mm

$ 21.36

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37.79ct Multicolor Jasper, Cushion, Opaque

30 x 22 mm (calibrated)

$ 26.09

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22.97ctw Brown Tiger'S Eye, Pear Shape, Opaque

18 x 13 mm (calibrated)

$ 30.20

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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 -> 8 star ratings

First time using this website. It was both exciting finding things in my price range and things Iam gonna save up for and use in other pieces. I love that the picture of the gem is the exact gem I'll be buying. I haven't tested the gems yes but they said they sold me 100% natural gems.

Posted By Salvo in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

GemSelect is always my first choice for purchasing gemstones. The fact that the gems are always exactly as described and pictured on the website has earned my trust many times over. Even when I don't buy, I still love browsing all the beautiful stones. My new favorites are the bright green Tsavorites!

Posted By Lkcisneros in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Good. I ts very user friendly.

Posted By Shalini in June, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Fast and reliable service.

Posted By Zæck in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Wonderful purchase, can't wait to see the stone.

Posted By Tim in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Great prices!!! High quality gemstones.

Posted By Ricky in October, 2025
Source: Bizrate
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