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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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Yellow Untreated Gemstones
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6.08ct Multicolor Boulder Opal, Oval, Opaque

16.1 x 9.9 mm

$ 30.28

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0.83ct Pink Malaya Garnet, Round, VS

5.5 mm (calibrated)

$ 36.37

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35.20ctw Multicolor Fossil Coral, Fancy, Opaque

23.6 x 12.5 mm

$ 37.80

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3.69ctw Purple Rhodolite Garnet, Marquise, VS

9.7 x 4.5 mm

$ 80.86

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0.06ct Black Diamond, Round, Opaque

2.4 mm (calibrated)

$ 20.53

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3.20ct Yellow Golden Beryl, Pear Shape, VS-SI

14 x 9 mm (calibrated)

$ 77.13

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24.70ct Green Uvarovite Garnet Drusy, Oval, Opaque

24.7 x 17 mm

$ 36.90

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1.91ct Green Tourmaline, Cushion, VS

8.8 x 6.3 mm

$ 221.94

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0.99ct Yellow Morganite, Oval, VS

8 x 6 mm (calibrated)

$ 43.38

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20.08ct Pink Rose Quartz, Oval, Transparent

18 x 13 mm (calibrated)

$ 26.40

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3.09ctw Green Peridot, Round, VVS-VS

4.8 mm

$ 50.79

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13.85ct Multicolor Ruby-Zoisite, Flower Cut, Opaque

18 x 13 mm (calibrated)

$ 16.83

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3.15ct Pink Strawberry Quartz, Oval, Transparent

11 x 8.6 mm

$ 23.62

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3.07ct Yellow Citrine, Oval, VS

11 x 9 mm (calibrated)

$ 20.18

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82.91ct Violet Amethyst, Oval, VVS

31.6 x 23.7 mm

$ 688.15

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0.69ct Yellow Color-Change Diaspore, Pear Shape, VVS-VS

10.7 x 3.8 mm

$ 24.19

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2.04ctw Orange Sunstone, Oval, Translucent

6.1 x 4.2 mm

$ 15.65

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38.56ct Green Jadeite, Oval, Translucent

28.3 x 22.2 mm

$ 63.36

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14.28ct Multicolor Labradorite, Pear Shape, Translucent

20 x 15 mm (calibrated)

$ 31.57

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10.97ct White Rainbow Moonstone, Fancy, Transparent

19.8 x 10.8 mm

$ 87.41

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9.13ctw Pink Strawberry Quartz, Oval, Transparent

12 x 10 mm (calibrated)

$ 140.04

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1.41ct Yellow Color-Change Diaspore, Emerald Cut, VS-SI

7 x 5.5 mm

$ 57.53

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45.79ct Multicolor Jasper, Pear Shape, Opaque

34.6 x 27.7 mm

$ 50.17

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27.75ct Violet Charoite, Oval, Opaque

27.7 x 21.7 mm

$ 41.47

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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 -> 9 star ratings

It was great!

Posted By Annie in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I love the product and the details about each of them.

Posted By Love It! in July, 2025
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Overall Rating -> 10 star ratings

Had a great experience and the prices are great

Posted By BuBx99 in November, 2025
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Overall Rating -> 9 star ratings

Plan on purchasing on an ongoing basis. So far.....so good....

Posted By Jim in January, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Everything was good, the purchase was what I expected and what they show is what you get.

Posted By Mr. in March, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

I've purchased things from GemSelect before. What you see is what you get, which is not always the case with gem sites online. You can find some good value with gem select, and I will buy from them again.

Posted By Meyeusername in March, 2026
Source: Bizrate
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