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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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2.76ctw Green Prehnite, Oval, Transparent

2.76ctw Green Prehnite, Oval, Transparent

7.4 x 6 mm

$ 15.12

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0.63ct Orange Zircon, Oval, VVS-VS

0.63ct Orange Zircon, Oval, VVS-VS

5.2 x 4.1 mm

$ 15.69

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9.84ct Green Moldavite, Fancy, Translucent
Moldavite Product Video (736132)

9.84ct Green Moldavite, Fancy, Translucent

22.8 x 15 mm

$ 201.80

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5.46ctw Multicolor Labradorite, Square, Translucent

5.46ctw Multicolor Labradorite, Square, Translucent

5.2 x 4.9 mm

$ 6.34

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3.99ct Multicolor Labradorite, Marquise, Translucent

3.99ct Multicolor Labradorite, Marquise, Translucent

14 x 7 mm (calibrated)

$ 8.82

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0.80ct Orange Zircon, Oval, VVS

0.80ct Orange Zircon, Oval, VVS

6 x 4 mm (calibrated)

$ 11.95

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0.47ct Green Chrysoberyl Cat'S Eye, Oval, Translucent

0.47ct Green Chrysoberyl Cat'S Eye, Oval, Translucent

4.4 x 4.4 mm

$ 14.04

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9.17ctw Black Spinel, Round, Opaque

9.17ctw Black Spinel, Round, Opaque

10 mm (calibrated)

$ 35.17

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10.08ct Pink Rose Quartz, Emerald Cut, Transparent

10.08ct Pink Rose Quartz, Emerald Cut, Transparent

12.5 x 12.5 mm

$ 55.22

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2.73ct Brown Smoky Quartz, Oval, VVS

2.73ct Brown Smoky Quartz, Oval, VVS

14.1 x 7.1 mm

$ 19.03

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2.71ct Yellow Citrine, Oval, VVS

2.71ct Yellow Citrine, Oval, VVS

11 x 9 mm (calibrated)

$ 18.89

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1.04ctw Green Peridot, Marquise, VS

1.04ctw Green Peridot, Marquise, VS

8 x 4 mm (calibrated)

$ 8.28

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3.69ctw Red Pyrope Garnet, Emerald Cut, VS

3.69ctw Red Pyrope Garnet, Emerald Cut, VS

6 x 4 mm (calibrated)

$ 25.73

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1.34ct Pink Morganite, Round, VVS-VS

1.34ct Pink Morganite, Round, VVS-VS

7 mm (calibrated)

$ 102.77

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3.88ctw Violet Amethyst, Oval, VVS-VS

3.88ctw Violet Amethyst, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 21.26

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0.82ct Orange Hessonite Garnet, Pear Shape, VS-SI

0.82ct Orange Hessonite Garnet, Pear Shape, VS-SI

7 x 5 mm (calibrated)

$ 14.00

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1.84ct Pink Strawberry Quartz, Round, Translucent

1.84ct Pink Strawberry Quartz, Round, Translucent

8 mm (calibrated)

$ 14.11

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6.37ctw Multicolor Labradorite, Square, Translucent

6.37ctw Multicolor Labradorite, Square, Translucent

5 x 4.7 mm

$ 6.17

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24.13ct Multicolor Jasper, Oval, Opaque

24.13ct Multicolor Jasper, Oval, Opaque

29.4 x 21 mm

$ 39.66

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5.71ctw Pink Strawberry Quartz, Oval, Transparent

5.71ctw Pink Strawberry Quartz, Oval, Transparent

10 x 8 mm (calibrated)

$ 42.43

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2.64ct Green Apatite, Emerald Cut, VS

2.64ct Green Apatite, Emerald Cut, VS

8 x 8 mm (calibrated)

$ 107.46

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0.27ct White Rainbow Moonstone, Square, Transparent

0.27ct White Rainbow Moonstone, Square, Transparent

4 x 4 mm (calibrated)

$ 9.41

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0.96ctw Yellow Citrine, Heart, VVS

0.96ctw Yellow Citrine, Heart, VVS

5 x 5 mm (calibrated)

$ 7.65

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3.21ct Yellow Citrine, Oval, VVS

3.21ct Yellow Citrine, Oval, VVS

13 x 9 mm (calibrated)

$ 19.46

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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

the selection is good as are the prices

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

Enjoy viewing the selections. Excellent product

Posted By ToRa.62 in April, 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

Easy to use. No issues. Large selection of gems.

Posted By CLTCJH in February, 2026
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Overall Rating -> 10 star ratings

The site provided lots of detail, factual data, and good photos. I also like the availability of searching by price range as well as by the type of stone.

Posted By SLIntuitive Donna in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I have a beautiful emerald I purchased from a company names gemselect and they are awesome! You should try them out?

Posted By Lynn in September, 2025
Source: Bizrate
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