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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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4.72ct Yellow Citrine, Oval, VVS-VS

4.72ct Yellow Citrine, Oval, VVS-VS

12 x 10 mm (calibrated)

$ 37.61

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0.88ct Yellow Citrine, Marquise, VS

0.88ct Yellow Citrine, Marquise, VS

9.1 x 5 mm

$ 7.01

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2.33ct Yellow Citrine, Trillion, VS

2.33ct Yellow Citrine, Trillion, VS

9 x 9 mm (calibrated)

$ 12.61

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6.56ctw White Moonstone, Round, Translucent

6.56ctw White Moonstone, Round, Translucent

9 mm (calibrated)

$ 17.97

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4.51ctw Yellow Citrine, Oval, VS

4.51ctw Yellow Citrine, Oval, VS

10 x 8 mm (calibrated)

$ 24.71

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2.70ct Violet Amethyst, Trillion, VVS-VS

2.70ct Violet Amethyst, Trillion, VVS-VS

10 x 10 mm (calibrated)

$ 18.82

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1.74ctw Green Demantoid Garnet, Oval, VS

1.74ctw Green Demantoid Garnet, Oval, VS

5.2 x 4.1 mm

$ 190.63

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2.10ct Yellow Citrine, Baguette, VS

2.10ct Yellow Citrine, Baguette, VS

9.8 x 5.2 mm

$ 16.10

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7.73ct Multicolor Pietersite, Pear Shape, Opaque

7.73ct Multicolor Pietersite, Pear Shape, Opaque

18 x 13 mm (calibrated)

$ 23.10

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1.22ctw Red Pyrope Garnet, Pear Shape, VVS-VS

1.22ctw Red Pyrope Garnet, Pear Shape, VVS-VS

7 x 4.7 mm

$ 9.72

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1.18ct Yellow Color-Change Diaspore, Cushion, VS

1.18ct Yellow Color-Change Diaspore, Cushion, VS

7.6 x 5.4 mm

$ 62.66

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6.53ct Violet Amethyst, Marquise, VS

6.53ct Violet Amethyst, Marquise, VS

18.1 x 9 mm

$ 50.08

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1.81ct Orange Hessonite Garnet, Oval, VS

1.81ct Orange Hessonite Garnet, Oval, VS

8.3 x 6.9 mm

$ 36.06

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4.48ctw Red Almandine Garnet, Oval, VVS-VS

4.48ctw Red Almandine Garnet, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 167.33

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2.92ct Pink Strawberry Quartz, Oval, Transparent

2.92ct Pink Strawberry Quartz, Oval, Transparent

10 x 8 mm (calibrated)

$ 21.70

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0.61ct Green Peridot, Pear Shape, VVS-VS

0.61ct Green Peridot, Pear Shape, VVS-VS

7 x 5 mm (calibrated)

$ 4.25

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1.64ct Turquoise Grandidierite, Oval, Translucent

1.64ct Turquoise Grandidierite, Oval, Translucent

8.6 x 7 mm

$ 42.93

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2.80ct Yellow Citrine, Oval, VVS-VS

2.80ct Yellow Citrine, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 13.94

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1.55ct Multicolor Tourmaline, Emerald Cut, VVS-VS
Tourmaline Product Video (744044)

1.55ct Multicolor Tourmaline, Emerald Cut, VVS-VS

7.3 x 5.5 mm

$ 347.36

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2.19ctw Yellow Beryl, Oval, VVS-VS

2.19ctw Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 43.62

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1.28ctw Yellow Citrine, Pear Shape, VVS-VS

1.28ctw Yellow Citrine, Pear Shape, VVS-VS

7 x 5 mm (calibrated)

$ 8.42

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5.52ct Gray Star Sapphire, Oval, Opaque

5.52ct Gray Star Sapphire, Oval, Opaque

9.5 x 8.5 mm

$ 211.67

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6.69ct Yellow Rutile Topaz, Pear Shape, Transparent

6.69ct Yellow Rutile Topaz, Pear Shape, Transparent

14.9 x 9.5 mm

$ 138.82

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18.75ct Violet Amethyst, Pear Shape, VVS

18.75ct Violet Amethyst, Pear Shape, VVS

21.2 x 15.8 mm

$ 130.73

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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

Love how easy the site is to use. Really love that the pictures are of actual product.

Posted By LeAnn in January, 2026
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Very food

Posted By Keeto in July, 2025
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Very pleasant

Posted By Varun in June, 2026
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Overall Rating -> 10 star ratings

Enjoy every moment

Posted By Ferns in October, 2025
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Overall Rating -> 10 star ratings

Would have bought an indigo and selenite, but neither listed. But, you do offer quite a large assortment otherwise.

Posted By JD in July, 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
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