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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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Untreated Gemstones Treatment

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10.10ct Green Jadeite, Oval, Translucent

10.10ct Green Jadeite, Oval, Translucent

19.7 x 14.1 mm

$ 22.13

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2.20ctw Yellow Beryl, Oval, VVS-VS

2.20ctw Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 43.82

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0.94ct Yellow Morganite, Oval, VS

0.94ct Yellow Morganite, Oval, VS

8 x 6 mm (calibrated)

$ 51.49

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8.10ctw Brown Smoky Quartz, Oval, VVS-VS

8.10ctw Brown Smoky Quartz, Oval, VVS-VS

12 x 10 mm (calibrated)

$ 33.98

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0.57ct Yellow Color-Change Diaspore, Marquise, VVS-VS

0.57ct Yellow Color-Change Diaspore, Marquise, VVS-VS

9.4 x 4 mm

$ 20.43

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0.90ctw Violet Amethyst, Oval, VVS-VS

0.90ctw Violet Amethyst, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 7.17

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12.96ct Multicolor Pietersite, Oval, Opaque
Pietersite Product Video (631670)

12.96ct Multicolor Pietersite, Oval, Opaque

26.2 x 16.2 mm

$ 48.92

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8.54ct Green Prehnite, Fancy, Transparent

8.54ct Green Prehnite, Fancy, Transparent

19.3 x 12.8 mm

$ 11.89

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3.88ct Pink Rose Quartz, Emerald Cut, Transparent

3.88ct Pink Rose Quartz, Emerald Cut, Transparent

9.5 x 9.3 mm

$ 21.26

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23.44ct Black Tourmaline, Emerald Cut, Opaque

23.44ct Black Tourmaline, Emerald Cut, Opaque

20.8 x 11.9 mm

$ 116.73

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2.80ct Pink Morganite, Round, Transparent

2.80ct Pink Morganite, Round, Transparent

9 mm (calibrated)

$ 30.37

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2.18ctw Multicolor Andalusite, Oval, VS

2.18ctw Multicolor Andalusite, Oval, VS

5.2 x 4.2 mm

$ 116.89

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5.98ct Multicolor Pietersite, Pear Shape, Opaque

5.98ct Multicolor Pietersite, Pear Shape, Opaque

20.3 x 10.4 mm

$ 19.85

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8.51ct Black Tourmaline, Emerald Cut, Opaque

8.51ct Black Tourmaline, Emerald Cut, Opaque

24.7 x 6.8 mm

$ 42.38

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10.10ct Multicolor Pietersite, Pear Shape, Opaque

10.10ct Multicolor Pietersite, Pear Shape, Opaque

24.9 x 13.4 mm

$ 33.53

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34.97ct Green Aventurine, Fancy, Opaque

34.97ct Green Aventurine, Fancy, Opaque

40.7 x 10.3 mm

$ 8.71

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3.55ct Black Star Diopside, Round, Opaque

3.55ct Black Star Diopside, Round, Opaque

8 mm (calibrated)

$ 14.73

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19.91ctw Multicolor Fossil Coral, Oval, Opaque

19.91ctw Multicolor Fossil Coral, Oval, Opaque

18.7 x 11.9 mm

$ 23.56

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0.91ct Pink Morganite, Oval, VVS-VS

0.91ct Pink Morganite, Oval, VVS-VS

7.3 x 5.3 mm

$ 79.76

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0.50ctw Green Kornerupine, Oval, VVS-VS

0.50ctw Green Kornerupine, Oval, VVS-VS

4.5 x 3.3 mm

$ 27.39

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6.03ct Brown Tiger'S Eye, Baguette, Opaque

6.03ct Brown Tiger'S Eye, Baguette, Opaque

12 x 10 mm (calibrated)

$ 6.01

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4.89ct Turquoise Grandidierite, Oval, Translucent
Grandidierite Product Video (471977)

4.89ct Turquoise Grandidierite, Oval, Translucent

11.4 x 9.6 mm

$ 535.75

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3.12ct Yellow Apatite, Pear Shape, VS-SI

3.12ct Yellow Apatite, Pear Shape, VS-SI

13 x 9 mm (calibrated)

$ 102.55

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1.70ct Yellow Citrine, Cushion, VS

1.70ct Yellow Citrine, Cushion, VS

7.5 x 7.4 mm

$ 11.85

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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 love the ability to choose from many options of shapes, gemstone type, color, and so forth. It is fun!

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