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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
Untreated Gemstones Clarity
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Untreated Gemstones Treatment

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3.42ctw Brown Smoky Quartz, Round, VS

3.42ctw Brown Smoky Quartz, Round, VS

8 mm (calibrated)

$ 7.49

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1.68ctw Red Pyrope Garnet, Pear Shape, VVS-VS

1.68ctw Red Pyrope Garnet, Pear Shape, VVS-VS

7 x 5 mm (calibrated)

$ 10.04

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3.39ct Yellow Apatite, Oval, VS

3.39ct Yellow Apatite, Oval, VS

11 x 9 mm (calibrated)

$ 111.42

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5.17ct Green Malachite, Oval, Opaque

5.17ct Green Malachite, Oval, Opaque

12 x 10 mm (calibrated)

$ 3.97

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12.03ct Multicolor Cinnabar, Oval, Opaque

12.03ct Multicolor Cinnabar, Oval, Opaque

20 x 15 mm (calibrated)

$ 14.08

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0.16ct White Diamond, Round, VS

0.16ct White Diamond, Round, VS

3.5 mm (calibrated)

$ 268.63

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27.60ct Gray Jadeite, Oval, Opaque

27.60ct Gray Jadeite, Oval, Opaque

28.5 x 22.7 mm

$ 45.36

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5.38ctw Green Peridot, Oval, VS

5.38ctw Green Peridot, Oval, VS

8 x 6 mm (calibrated)

$ 58.95

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2.38ct Red Almandine Garnet, Emerald Cut, VVS-VS

2.38ct Red Almandine Garnet, Emerald Cut, VVS-VS

9 x 6 mm (calibrated)

$ 69.14

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1.38ct Purple Sapphire, Cushion, VS
Sapphire Product Video (448505)

1.38ct Purple Sapphire, Cushion, VS

7.5 x 5.4 mm

$ 728.76

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3.16ctw Orange Zircon, Round, VVS-VS
Zircon Product Video (434542)

3.16ctw Orange Zircon, Round, VVS-VS

6.5 mm (calibrated)

$ 69.24

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0.69ct Orange Zircon, Oval, VVS-VS

0.69ct Orange Zircon, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 17.18

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24.88ct Green Amazonite, Fancy, Opaque

24.88ct Green Amazonite, Fancy, Opaque

41.2 x 9 mm

$ 4.96

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20.29ct White Rainbow Moonstone, Pear Shape, Transparent

20.29ct White Rainbow Moonstone, Pear Shape, Transparent

21.3 x 15.9 mm

$ 161.67

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1.35ct Violet Amethyst, Marquise, VS

1.35ct Violet Amethyst, Marquise, VS

12.1 x 5.5 mm

$ 10.36

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16.40ctw Multicolor Labradorite, Oval, Translucent

16.40ctw Multicolor Labradorite, Oval, Translucent

18 x 13 mm (calibrated)

$ 35.94

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0.62ct Yellow Citrine, Marquise, VS

0.62ct Yellow Citrine, Marquise, VS

9 x 5.1 mm

$ 4.94

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7.69ct Brown Smoky Quartz, Round, VVS-VS

7.69ct Brown Smoky Quartz, Round, VVS-VS

13 mm (calibrated)

$ 12.64

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1.39ct Green Tourmaline, Oval, Transparent

1.39ct Green Tourmaline, Oval, Transparent

8 x 6 mm (calibrated)

$ 17.72

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69.97ct Multicolor Chrysocolla, Fancy, Opaque
Chrysocolla Product Video (658322)

69.97ct Multicolor Chrysocolla, Fancy, Opaque

40.2 x 27.6 mm

$ 119.17

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2.40ct Orange Moonstone, Cushion, Translucent

2.40ct Orange Moonstone, Cushion, Translucent

8 x 8 mm (calibrated)

$ 4.78

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0.88ct Green Peridot, Oval, VS

0.88ct Green Peridot, Oval, VS

7 x 5 mm (calibrated)

$ 6.13

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1.53ctw Orange Zircon, Oval, VVS-VS

1.53ctw Orange Zircon, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 38.10

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1.56ct Orange Zircon, Round, VVS-VS

1.56ct Orange Zircon, Round, VVS-VS

6.5 mm (calibrated)

$ 34.18

View Gem
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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

Very food

Posted By Keeto in July, 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

The stones are very nice.

Posted By Mvk in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Easy to use website

Posted By Mel in February, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

I did not realize these stones were of jewelry quality. They are really beautiful, just not what I was expecting which was more of a natural stone.

Posted By Jewelry Quality Stones 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
→ View All GemSelect Reviews on Bizrate
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