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Untreated Gemstones

Browse our selection of untreated gemstones featuring natural color, clarity and beauty without enhancements.

Untreated Gemstones Weight
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27.89ctw Multicolor Jasper, Oval, Opaque

20 x 15 mm (calibrated)

$ 30.56

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17.98ctw Multicolor Jasper, Heart, Translucent

22.1 x 14.7 mm

$ 19.70

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0.89ct Pink Strawberry Quartz, Oval, Translucent

7.4 x 5.7 mm

$ 10.23

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5.87ctw Brown Tiger'S Eye, Oval, Opaque

10 x 8 mm (calibrated)

$ 8.77

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14.86ct Gray Hematite, Marquise, Opaque

22.1 x 10.8 mm

$ 14.49

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2.23ct Orange Hessonite Garnet, Oval, VS-SI

9 x 7 mm (calibrated)

$ 44.42

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6.16ct Violet Amethyst, Round, VVS-VS

12 mm (calibrated)

$ 36.81

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1.70ct Orange Hessonite Garnet, Oval, VS

8 x 6 mm (calibrated)

$ 30.48

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3.15ct Yellow Citrine, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 21.96

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1.31ct Yellow Citrine, Round, VVS-VS

7 mm (calibrated)

$ 10.44

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8.04ct Green Druzy Variscite, Fancy, Opaque

26.9 x 13.5 mm

$ 8.25

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8.07ct Yellow Apatite, Emerald Cut, SI

14 x 10 mm (calibrated)

$ 221.05

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1.36ct Orange Zircon, Round, VVS-VS

6 mm (calibrated)

$ 29.80

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1.18ct Red Rhodolite Garnet, Emerald Cut, VVS-VS

5.6 x 5.2 mm

$ 44.07

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3.31ct Bi-Color Ametrine, Emerald Cut, VVS-VS

10 x 8 mm (calibrated)

$ 34.73

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4.86ctw Multicolor Pietersite, Pear Shape, Opaque

17.5 x 7.8 mm

$ 11.37

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2.56ctw White Rainbow Moonstone, Square, Transparent

3 x 3 mm (calibrated)

$ 40.53

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1.46ct Orange Zircon, Round, VVS-VS

6.5 mm (calibrated)

$ 31.99

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2.00ct Orange Hessonite Garnet, Cushion, VVS-VS

8 x 6 mm (calibrated)

$ 35.86

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14.10ct Green Serpentine, Oval, Translucent

19 x 13.2 mm

$ 30.20

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2.09ct White Cat'S Eye Moonstone, Round, Translucent

8 mm (calibrated)

$ 9.16

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16.30ct Multicolor Boulder Opal, Cushion, Opaque

24.9 x 9.9 mm

$ 113.64

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3.72ctw Yellow Citrine, Round, VVS

8 mm (calibrated)

$ 25.94

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6.76ct Green Prehnite, Fancy, Transparent

19.4 x 10.6 mm

$ 9.41

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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

I purchased from you before and I have never been disappointed. I always received what I expected and your products are very nice.

Posted By MVK in July, 2025
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Overall Rating -> 10 star ratings

love the site, the experience and the products.

Posted By Ckingpots in July, 2025
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Overall Rating -> 9 star ratings

They have literally everything on this website! The prices are also pretty good, I was able to find plenty of nice stones that I could afford!

Posted By JC in March, 2026
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Overall Rating -> 10 star ratings

It's mostly good, only some item's are easier to find through the search than the menu

Posted By Wayne in July, 2025
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Overall Rating -> 10 star ratings

Very good

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

IT WAS GREAT SIMPLE I WAS ABLE TO MAKE AN ACCOUNT EASY AND WAS ABLE TO FAVORITE ALL OF MY FINAL SELECTED GEMS, I JUST LOVE IT.

Posted By YE in October, 2025
Source: Bizrate
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