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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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11.34ctw Green Prehnite, Oval, Transparent

6.8 x 5.3 mm

$ 124.24

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15.37ct Violet Amethyst, Flower Cut, Translucent

16 x 16 mm (calibrated)

$ 45.92

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19.16ct Violet Amethyst, Emerald Cut, VVS

20 x 15 mm (calibrated)

$ 133.58

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2.23ct Brown Smoky Quartz, Oval, VVS

9.6 x 7.7 mm

$ 15.55

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1.22ctw Red Pyrope Garnet, Heart, VS

5 x 5 mm (calibrated)

$ 30.38

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3.73ctw Violet Amethyst, Oval, VS

7.1 x 5.2 mm

$ 20.43

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1.60ct Pink Tourmaline, Emerald Cut, VVS

11.2 x 4.5 mm

$ 105.18

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6.92ct Turquoise Grandidierite, Oval, Translucent

12.6 x 10 mm

$ 1,516.31

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1.18ct Green Sphene, Oval, Transparent

6.7 x 6.1 mm

$ 5.88

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9.35ct Multicolor Agate, Oval, Opaque

14.1 x 11.2 mm

$ 8.85

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0.37ct Green Sphene, Oval, VVS-VS

4.6 x 3.7 mm

$ 16.22

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36.17ct Multicolor Rainbow Moonstone, Fancy, Opaque

40 x 10.6 mm

$ 3.60

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2.57ct Green Sphene, Oval, Translucent

8.7 x 7.4 mm

$ 14.09

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0.64ct Pink Tourmaline, Round, Transparent

5 mm (calibrated)

$ 25.50

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0.73ct Yellow Beryl, Oval, VVS-VS

7.1 x 5.2 mm

$ 18.18

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22.00ct Pink Rose Quartz, Oval, Transparent/Translucent

20 x 16.8 mm

$ 31.33

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8.23ct Brown Tiger'S Eye, Cushion, Opaque

14 x 12 mm (calibrated)

$ 8.20

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1.35ct Yellow Citrine, Emerald Cut, VVS-VS

8 x 6 mm (calibrated)

$ 10.76

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5.50ct Red Almandine Garnet, Emerald Cut, VVS-VS

12.4 x 8.4 mm

$ 164.34

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4.20ct Multicolor Labradorite, Marquise, Translucent

14 x 7 mm (calibrated)

$ 9.28

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0.39ct Yellow Citrine, Heart, VVS

5 x 5 mm (calibrated)

$ 3.10

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1.04ct Yellow Citrine, Trillion, VVS-VS

7 x 7 mm (calibrated)

$ 8.28

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9.24ctw Green Amazonite, Cushion, Opaque

7 x 7 mm (calibrated)

$ 22.47

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1.49ct Yellow Beryl, Oval, VVS

9.1 x 6.7 mm

$ 29.68

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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 good place to buy gemstones

Posted By Elansary in March, 2026
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Great website, easy to navigate, and loads quickly. Have bought here before, very pleased!

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It was good. There was a large selection at prices I could afford.

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My experience was done with ease

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Overall Rating -> 10 star ratings

good navigation and simple interface.

Posted By Dave in April, 2026
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Overall Rating -> 9 star ratings

Ita's a pretty good and simple way to find gems that youa're looking for amazing selection

Posted By Amman in May, 2026
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