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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
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1.55ct Blue Kyanite, Oval, SI

8 x 6 mm (calibrated)

$ 30.88

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27.96ctw Multicolor Coral, Oval, Opaque

22.1 x 13.2 mm

$ 53.00

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20.96ct Violet Amethyst, Emerald Cut, VVS

20 x 15 mm (calibrated)

$ 146.13

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6.23ctw White Topaz, Emerald Cut, VVS-VS

8 x 8 mm (calibrated)

$ 40.95

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1.64ct Yellow Rutile Topaz, Heart, Transparent

9 x 7 mm (calibrated)

$ 34.03

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1.06ct Orange Citrine, Heart, VS

7 x 7 mm (calibrated)

$ 8.80

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9.80ctw Pink Rose Quartz, Emerald Cut, Transparent

11 x 11 mm (calibrated)

$ 53.68

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2.77ct Violet Amethyst, Trillion, VVS-VS

10 x 10 mm (calibrated)

$ 19.31

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19.81ct Pink Rose Quartz, Oval, Transparent

18.6 x 15.7 mm

$ 29.29

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2.00ctw Red Pyrope Garnet, Round, Transparent

2.1 mm (calibrated)

$ 10.96

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8.10ct Blue Hemimorphite Druzy, Fancy, Opaque

14 x 12 mm (calibrated)

$ 133.12

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20.73ct Yellow Obsidian, Oval, Opaque

31.8 x 18.9 mm

$ 18.17

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30.24ct Green Aventurine, Fancy, Opaque

37.9 x 10.5 mm

$ 7.53

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4.83ctw Pink Strawberry Quartz, Round, Transparent

9 mm (calibrated)

$ 25.50

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5.24ct Yellow Apatite, Oval, VVS-VS

12.7 x 10.3 mm

$ 143.29

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0.78ct Green Tourmaline, Emerald Cut, VVS-VS

8.9 x 4.1 mm

$ 19.42

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3.21ctw White Topaz, Cushion, VVS-VS

4.6 x 4.6 mm

$ 17.59

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1.52ctw Yellow Citrine, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 10.60

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2.25ct Red Almandine Garnet, Oval, VS

9 x 7 mm (calibrated)

$ 84.04

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7.66ct Violet Amethyst, Pear Shape, VS

18 x 13 mm (calibrated)

$ 58.25

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8.84ct Multicolor Agate, Oval, Opaque

13.3 x 11.9 mm

$ 14.97

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10.31ct White Rose Quartz, Flower Cut, Transparent

21.8 x 21.6 mm

$ 22.59

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1.27ct Gray Sillimanite Cat'S Eye, Oval, Transparent

6.8 x 4.8 mm

$ 5.06

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2.91ct Pink Tourmaline, Emerald Cut, VVS-VS

14.7 x 4.8 mm

$ 223.17

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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 feel Gemselect is a trustworthy company to buy from

Posted By Becky in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Good selection, using for custom jewlery for my wife.

Posted By Smitty in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

My whole experience is great.

Posted By Ghs in November, 2025
Source: Bizrate

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

Overall Rating -> 9 star ratings

It was fine . Wish there had been more round stones to select from

Posted By Emm in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

It was easy to navigate

Posted By GemGod in July, 2025
Source: Bizrate
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