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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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1.98ct Pink Strawberry Quartz, Round, Translucent

1.98ct Pink Strawberry Quartz, Round, Translucent

8 mm (calibrated)

$ 15.19

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2.96ct Yellow Citrine, Oval, VS

2.96ct Yellow Citrine, Oval, VS

11 x 9 mm (calibrated)

$ 19.46

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6.66ct Pink Kunzite, Emerald Cut, VS

6.66ct Pink Kunzite, Emerald Cut, VS

11.3 x 7.7 mm

$ 165.83

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0.96ct Orange Sunstone, Oval, Translucent

0.96ct Orange Sunstone, Oval, Translucent

7.6 x 5.9 mm

$ 6.69

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2.95ct Green Malachite, Oval, Opaque

2.95ct Green Malachite, Oval, Opaque

9.4 x 7.6 mm

$ 2.94

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6.12ct Multicolor Fire Agate, Fancy, Opaque

6.12ct Multicolor Fire Agate, Fancy, Opaque

13 x 9 mm (calibrated)

$ 86.22

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28.12ctw Multicolor Coral, Cushion, Opaque

28.12ctw Multicolor Coral, Cushion, Opaque

18.7 x 13.5 mm

$ 53.30

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0.94ct Green Sphene, Oval, Transparent

0.94ct Green Sphene, Oval, Transparent

5.9 x 5.5 mm

$ 5.15

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6.54ct Yellow Citrine, Oval, VVS

6.54ct Yellow Citrine, Oval, VVS

14.2 x 10.4 mm

$ 39.63

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23.08ct Multicolor Jasper, Oval, Opaque

23.08ct Multicolor Jasper, Oval, Opaque

30 x 22 mm (calibrated)

$ 18.97

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9.59ct Brown Tiger'S Eye, Oval, Opaque

9.59ct Brown Tiger'S Eye, Oval, Opaque

18 x 13 mm (calibrated)

$ 5.64

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11.90ctw Green Seraphinite, Pear Shape, Opaque

11.90ctw Green Seraphinite, Pear Shape, Opaque

14 x 10 mm (calibrated)

$ 17.78

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1.03ct Green Tourmaline, Baguette, VVS

1.03ct Green Tourmaline, Baguette, VVS

15.5 x 3.1 mm

$ 35.91

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3.48ct Yellow Cat'S Eye Apatite, Oval, Translucent

3.48ct Yellow Cat'S Eye Apatite, Oval, Translucent

10 x 7 mm (calibrated)

$ 22.24

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2.96ctw Yellow Golden Beryl, Round, VVS-VS

2.96ctw Yellow Golden Beryl, Round, VVS-VS

8 mm (calibrated)

$ 64.86

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5.59ct Yellow Citrine, Oval, VVS-VS

5.59ct Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 33.56

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18.99ct Gray Hematite, Baguette, Opaque

18.99ct Gray Hematite, Baguette, Opaque

18.3 x 14.2 mm

$ 18.52

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1.49ct Orange Hessonite Garnet, Square, VS

1.49ct Orange Hessonite Garnet, Square, VS

6 x 6 mm (calibrated)

$ 23.65

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7.00ct Green Prehnite, Fancy, Translucent

7.00ct Green Prehnite, Fancy, Translucent

14.8 x 10.5 mm

$ 11.50

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5.84ct Yellow Citrine, Round, VVS

5.84ct Yellow Citrine, Round, VVS

12 mm (calibrated)

$ 44.79

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5.67ct Yellow Star Moonstone, Oval, Translucent
Star Moonstone Product Video (418376)

5.67ct Yellow Star Moonstone, Oval, Translucent

12 x 10 mm (calibrated)

$ 24.85

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1.91ct Multicolor Opal, Pear Shape, Translucent

1.91ct Multicolor Opal, Pear Shape, Translucent

12 x 8.9 mm

$ 83.71

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3.27ct Red Zircon, Oval, VVS-VS
Zircon Product Video (310960)

3.27ct Red Zircon, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 157.63

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6.37ct Multicolor Pietersite, Oval, Opaque

6.37ct Multicolor Pietersite, Oval, Opaque

16 x 12 mm (calibrated)

$ 21.15

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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
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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

I have purchased stones from gem select in the past and have been very satisfied. I expect to repeat that experience with this purchase as well

Posted By Marti in July, 2025
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Overall Rating -> 10 star ratings

Navigating the site was very easy and the photos of the exact gem you would be purchasing was well done.

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

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

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

I have been very happy with my prior purchases and enjoy the website experience.

Posted By Trouble in November, 2025
Source: Bizrate
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