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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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13.53ct Violet Amethyst, Cushion, VVS

13.53ct Violet Amethyst, Cushion, VVS

15 x 15 mm (calibrated)

$ 94.33

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3.32ctw Orange Hessonite Garnet, Oval, VS-SI

3.32ctw Orange Hessonite Garnet, Oval, VS-SI

7.7 x 6.4 mm

$ 55.36

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4.06ct Yellow Citrine, Oval, VS

4.06ct Yellow Citrine, Oval, VS

12 x 10 mm (calibrated)

$ 22.24

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2.99ctw Yellow Citrine, Square, VS

2.99ctw Yellow Citrine, Square, VS

7 x 7 mm (calibrated)

$ 20.77

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55.15ct Multicolor Tiger'S Eye Matrix, Oval, Opaque

55.15ct Multicolor Tiger'S Eye Matrix, Oval, Opaque

35.4 x 24.6 mm

$ 54.93

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1.77ctw Orange Moonstone, Trillion, Translucent

1.77ctw Orange Moonstone, Trillion, Translucent

6 x 6 mm (calibrated)

$ 3.54

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2.25ct Yellow Beryl, Oval, VS

2.25ct Yellow Beryl, Oval, VS

10 x 8 mm (calibrated)

$ 56.03

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2.31ct Orange Hessonite Garnet, Cushion, VS

2.31ct Orange Hessonite Garnet, Cushion, VS

7 x 7 mm (calibrated)

$ 45.56

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1.58ct Yellow Citrine, Emerald Cut, VVS-VS

1.58ct Yellow Citrine, Emerald Cut, VVS-VS

8 x 6 mm (calibrated)

$ 9.87

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0.74ct Green Tourmaline, Emerald Cut, VVS

0.74ct Green Tourmaline, Emerald Cut, VVS

7.7 x 3.8 mm

$ 18.43

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22.46ct Gray Hematite, Square, Opaque

22.46ct Gray Hematite, Square, Opaque

16.7 x 16 mm

$ 22.64

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6.34ct Brown Smoky Quartz, Round, VVS-VS

6.34ct Brown Smoky Quartz, Round, VVS-VS

12 mm (calibrated)

$ 10.42

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3.58ctw Orange Moonstone, Cushion, Translucent

3.58ctw Orange Moonstone, Cushion, Translucent

7 x 7 mm (calibrated)

$ 7.13

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6.36ct Yellow Moonstone, Oval, Translucent

6.36ct Yellow Moonstone, Oval, Translucent

14.6 x 8.1 mm

$ 13.73

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3.60ct Violet Amethyst, Round, VVS

3.60ct Violet Amethyst, Round, VVS

10 mm (calibrated)

$ 27.61

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1.73ct Orange Hessonite Garnet, Oval, VS-SI

1.73ct Orange Hessonite Garnet, Oval, VS-SI

8 x 6.5 mm

$ 28.44

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0.66ct Yellow Beryl, Oval, VVS-VS

0.66ct Yellow Beryl, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 16.43

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6.28ctw White Moonstone, Round, Translucent

6.28ctw White Moonstone, Round, Translucent

9 mm (calibrated)

$ 17.20

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0.61ct Yellow Color-Change Diaspore, Oval, VVS-VS

0.61ct Yellow Color-Change Diaspore, Oval, VVS-VS

6.7 x 5.2 mm

$ 22.58

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5.72ctw Pink Moonstone, Flower Cut, Translucent

5.72ctw Pink Moonstone, Flower Cut, Translucent

9.4 x 9.2 mm

$ 25.07

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5.31ctw Pink Strawberry Quartz, Oval, Transparent

5.31ctw Pink Strawberry Quartz, Oval, Transparent

10 x 8 mm (calibrated)

$ 39.45

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1.09ct Yellow Beryl, Round, VVS-VS

1.09ct Yellow Beryl, Round, VVS-VS

7 mm (calibrated)

$ 23.89

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1.59ct Green Tourmaline, Oval, VS

1.59ct Green Tourmaline, Oval, VS

8.4 x 7 mm

$ 184.76

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1.14ct Yellow Citrine, Trillion, VS

1.14ct Yellow Citrine, Trillion, VS

7 x 7 mm (calibrated)

$ 8.75

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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

Absolutely love the website, selection and products. Can you guys add a gemstones with inclusions tab. I like those it'd be nice to have them all in one place but i do understand it would be alot of work to go through and categorize them. Thank you anyways

Posted By The homie edgar in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

love the site, the experience and the products.

Posted By Ckingpots in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Web site is very simple to navigate Selection is terrific

Posted By ToRa.62 in April, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

The website was easy to use and informative of the selection of stones it has. I quickly found the right stone for me.

Posted By Guero in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I loved it! Extensive inventory, great prices, I definitely will be buying from here again!

Posted By Lex in April, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

The website was easy to use and there were a lot of good options, I was satisfied.

Posted By Brielly in January, 2026
Source: Bizrate
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