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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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3.61ct Pink Tourmaline, Emerald Cut, VS

3.61ct Pink Tourmaline, Emerald Cut, VS

10.9 x 7 mm

$ 177.99

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8.16ctw Multicolor Labradorite, Pear Shape, Translucent

8.16ctw Multicolor Labradorite, Pear Shape, Translucent

12 x 8 mm (calibrated)

$ 18.04

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2.78ct Blue Kyanite, Oval, SI
Kyanite Product Video (574646)

2.78ct Blue Kyanite, Oval, SI

9.5 x 7.1 mm

$ 50.76

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3.32ct Yellow Citrine, Oval, VVS-VS

3.32ct Yellow Citrine, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 20.30

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0.60ct Orange Zircon, Oval, VS

0.60ct Orange Zircon, Oval, VS

5.2 x 4 mm

$ 14.94

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0.70ct Yellow Color-Change Garnet, Emerald Cut, VVS-VS

0.70ct Yellow Color-Change Garnet, Emerald Cut, VVS-VS

7 x 3.6 mm

$ 72.48

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28.79ctw Black Spinel, Fancy, Opaque

28.79ctw Black Spinel, Fancy, Opaque

18.1 x 11.7 mm

$ 134.63

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14.88ct Red Star Garnet, Oval, Opaque

14.88ct Red Star Garnet, Oval, Opaque

15 x 11.8 mm

$ 14.67

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9.28ct Brown Tiger'S Eye, Cushion, Opaque

9.28ct Brown Tiger'S Eye, Cushion, Opaque

14 x 12 mm (calibrated)

$ 12.01

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9.44ct Green Jadeite, Oval, Translucent

9.44ct Green Jadeite, Oval, Translucent

18.3 x 14.8 mm

$ 31.03

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1.51ctw Red Pyrope Garnet, Square, VS

1.51ctw Red Pyrope Garnet, Square, VS

5 x 5 mm (calibrated)

$ 11.59

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1.50ct White Moonstone, Oval, Transparent

1.50ct White Moonstone, Oval, Transparent

9 x 7 mm (calibrated)

$ 13.15

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3.79ct Green Chrysoprase, Cushion, Translucent

3.79ct Green Chrysoprase, Cushion, Translucent

11.8 x 7.2 mm

$ 31.46

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28.71ct Multicolor Jasper, Trillion, Opaque

28.71ct Multicolor Jasper, Trillion, Opaque

32.3 x 25.3 mm

$ 16.67

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8.84ct Multicolor Agate, Oval, Opaque

8.84ct Multicolor Agate, Oval, Opaque

13.3 x 11.9 mm

$ 14.97

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24.98ct Multicolor Jasper, Fancy, Opaque

24.98ct Multicolor Jasper, Fancy, Opaque

29.8 x 10.7 mm

$ 7.46

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11.06ct Multicolor Agate, Oval, Opaque

11.06ct Multicolor Agate, Oval, Opaque

14.1 x 12.7 mm

$ 10.47

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2.45ct Pink Tourmaline, Emerald Cut, SI

2.45ct Pink Tourmaline, Emerald Cut, SI

9 x 6 mm (calibrated)

$ 107.37

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33.83ctw Multicolor Jasper, Oval, Opaque

33.83ctw Multicolor Jasper, Oval, Opaque

32.7 x 13.9 mm

$ 55.59

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0.53ct Orange Sphalerite, Round, SI-I1

0.53ct Orange Sphalerite, Round, SI-I1

4.5 mm (calibrated)

$ 26.39

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15.55ct Violet Amethyst, Emerald Cut, VVS-VS

15.55ct Violet Amethyst, Emerald Cut, VVS-VS

18 x 13 mm (calibrated)

$ 108.41

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2.90ct Pink Morganite, Round, Transparent

2.90ct Pink Morganite, Round, Transparent

9 mm (calibrated)

$ 31.46

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3.23ct Violet Amethyst, Oval, VS

3.23ct Violet Amethyst, Oval, VS

10.8 x 8.2 mm

$ 25.74

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0.48ct Yellow Citrine, Marquise, VVS-VS

0.48ct Yellow Citrine, Marquise, VVS-VS

8 x 4 mm (calibrated)

$ 3.34

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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!

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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.

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I was able to find what I wanted very easily!

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Everything was great, website user friendly, quality amazing, communication amazing, delivery amazing, everything was as expected, they done what they said they would, overall experience was amazing.

Posted By Jac in July, 2025
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