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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
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Orange Untreated Gemstones
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Yellow Untreated Gemstones
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1.39ct Green Chrysoberyl, Pear Shape, VVS-VS

8.6 x 5.9 mm

$ 161.99

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42.59ct Multicolor Jasper, Fancy, Opaque

39.2 x 19.9 mm

$ 46.66

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3.51ct Purple Kunzite, Emerald Cut, VS

7.6 x 7.6 mm

$ 80.49

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18.15ct White Rainbow Moonstone, Pear Shape, Transparent

21.9 x 16.3 mm

$ 225.97

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1.01ct Orange Hessonite Garnet, Pear Shape, VS-SI

8 x 5.5 mm

$ 18.44

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4.96ct Pink Kunzite, Emerald Cut, VS

10.7 x 6.7 mm

$ 113.74

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37.10ctw Multicolor Fossil Coral, Cushion, Opaque

18.4 x 15 mm

$ 66.25

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13.57ct Multicolor Rainbow Pyrite, Pear Shape, Opaque

23.2 x 15.4 mm

$ 35.14

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33.44ct Violet Amethyst, Oval, VVS-VS

21.7 x 18.1 mm

$ 222.04

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68.84ct Green Malachite, Square, Opaque

25 x 24.3 mm

$ 68.57

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98.16ct Multicolor Moss Agate, Pear Shape, Opaque

53.6 x 36.1 mm

$ 78.22

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19.30ct Pink Morganite, Round, VVS-VS

17 mm (calibrated)

$ 3,171.76

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6.37ct Yellow Apatite, Emerald Cut, VS

13.3 x 9.8 mm

$ 289.98

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24.08ct Green Tourmaline, Oval, VVS

17.4 x 14.5 mm

$ 3,997.28

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14.38ct White Howlite, Pear Shape, Opaque

23.2 x 16.4 mm

$ 6.73

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13.83ct Pink Kunzite, Oval, VS

14.7 x 11.5 mm

$ 303.04

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0.25ct Yellow Diamond, Round, VS-SI

4 mm (calibrated)

$ 380.34

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121.07ct Multicolor Chrysocolla, Trillion, Opaque

45.1 x 40.4 mm

$ 206.21

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3000.00ct Blue Lapis Lazuli, Sphere / Ball, Opaque

71 mm

$ 1,774.87

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9.86ct Multicolor Fire Agate, Fancy, Opaque

16.9 x 12.3 mm

$ 77.35

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0.60ct Green Demantoid Garnet, Oval, VS

6 x 4.2 mm

$ 164.34

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11.75ct Pink Rose Quartz, Emerald Cut, Transparent

14 x 14 mm (calibrated)

$ 64.37

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4.38ct Multicolor Opal, Trillion, Translucent

12.5 x 12.3 mm

$ 109.06

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1.08ct Orange Morganite, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 54.23

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

Wonderful purchase, can't wait to see the stone.

Posted By Tim in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I was looking for high-quality amethyst on this site, and I was able to compare size, color, and weight in detail before making a purchase.

Posted By Atsuhisa in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Good, hope gem quality is good and genuine

Posted By Varun in May, 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

love the site, the experience and the products.

Posted By Ckingpots in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Love, and have always loved, your website.

Posted By Aberabic in July, 2025
Source: Bizrate
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