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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
Untreated Gemstones Clarity
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Untreated Gemstones Treatment

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Multicolor Untreated Gemstones
Orange Untreated Gemstones
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Yellow Untreated Gemstones
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0.45ct Orange Zircon, Oval, VVS

5 x 4 mm (calibrated)

$ 11.21

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2.77ct Multicolor Labradorite, Pear Shape, Translucent

10 x 8 mm (calibrated)

$ 6.13

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1.10ctw Orange Citrine, Marquise, VVS

8.2 x 4.2 mm

$ 6.57

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2.31ct Purple Rhodolite Garnet, Oval, VVS-VS

8.2 x 6.9 mm

$ 76.69

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1.32ct Multicolor Opal, Oval, Translucent

10 x 8 mm (calibrated)

$ 57.85

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1.15ct White Topaz, Oval, Transparent

10.1 x 4.2 mm

$ 6.31

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2.50ctw Orange Hessonite Garnet, Emerald Cut, VS

7 x 5 mm (calibrated)

$ 49.80

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26.87ctw Black Spinel, Oval, Opaque

18 x 13 mm (calibrated)

$ 88.31

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9.94ct Green Prehnite, Fancy, Translucent

16 x 12 mm (calibrated)

$ 16.33

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

8 mm (calibrated)

$ 9.16

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1.90ct Multicolor Pietersite, Marquise, Opaque

13 x 5.8 mm

$ 4.60

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0.74ct Yellow Beryl, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 18.43

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2.34ct Yellow Citrine, Trillion, VVS-VS

9 x 9 mm (calibrated)

$ 12.67

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2.98ct Yellow Citrine, Cushion, VVS-VS

11 x 9 mm (calibrated)

$ 20.77

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23.09ct Purple Ruby-Zoisite, Flower Cut, Opaque

15.9 x 15.2 mm

$ 28.05

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0.63ct Green Tourmaline, Round, Transparent

5 mm (calibrated)

$ 12.55

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5.55ctw Yellow Citrine, Oval, VVS

10 x 8 mm (calibrated)

$ 27.64

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0.50ct Pink Morganite, Pear Shape, VVS-VS

7.7 x 4 mm

$ 30.13

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11.73ct Black Tourmaline, Emerald Cut, Opaque

16.3 x 10.3 mm

$ 58.42

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4.16ct Orange Sunstone, Oval, Translucent

12 x 10 mm (calibrated)

$ 18.82

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3.78ct Purple Kunzite, Pear Shape, VS

9.8 x 8.4 mm

$ 104.02

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21.98ct Brown Moonstone, Round, Translucent

18 mm (calibrated)

$ 48.16

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7.44ctw Violet Amethyst, Oval, Transparent

11 x 9 mm (calibrated)

$ 33.96

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1.40ct Orange Hessonite Garnet, Baguette, VS-SI

7 x 5 mm (calibrated)

$ 30.68

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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

Found a beautiful opal at a great price. I was not disappointed when it arrived. Even better in person.

Posted By Fried Rice in August, 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

Took a chance on purchasing my gemstones from Gemselect and was impressed. 10/10

Posted By KT in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I had a very easy time navigating the web page and using filters to find what I was looking for. The varied selection was nice to see and pricing is clear and fair.

Posted By Mattick in May, 2026
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

I am filling a small treasure chest and picked a nice amethyst.

Posted By VinnyD in August, 2025
Source: Bizrate
Enlarged Gemstone Image