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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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Bi-color Untreated Gemstones
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Multicolor Untreated Gemstones
Orange Untreated Gemstones
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Yellow Untreated Gemstones
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6.32ct Violet Amethyst, Pear Shape, VVS-VS

6.32ct Violet Amethyst, Pear Shape, VVS-VS

16 x 12 mm (calibrated)

$ 48.46

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26.97ct Green Amazonite, Fancy, Opaque

26.97ct Green Amazonite, Fancy, Opaque

40.6 x 9.4 mm

$ 8.06

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0.83ct Yellow Beryl, Oval, VVS

0.83ct Yellow Beryl, Oval, VVS

7 x 5 mm (calibrated)

$ 16.53

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9.79ct Brown Smoky Quartz, Round, VVS

9.79ct Brown Smoky Quartz, Round, VVS

14 mm (calibrated)

$ 19.19

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1.43ct Orange Zircon, Pear Shape, VVS

1.43ct Orange Zircon, Pear Shape, VVS

8 x 6 mm (calibrated)

$ 34.80

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0.06ct Black Diamond, Round, Opaque

0.06ct Black Diamond, Round, Opaque

2.6 mm (calibrated)

$ 20.53

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0.90ct Green Peridot, Oval, VVS-VS

0.90ct Green Peridot, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 12.55

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1.73ct Red Almandine Garnet, Marquise, VVS

1.73ct Red Almandine Garnet, Marquise, VVS

12 x 6 mm (calibrated)

$ 64.62

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0.89ctw Green Peridot, Pear Shape, VVS-VS

0.89ctw Green Peridot, Pear Shape, VVS-VS

6 x 4 mm (calibrated)

$ 6.82

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6.10ctw Brown Tiger'S Eye, Oval, Opaque

6.10ctw Brown Tiger'S Eye, Oval, Opaque

10 x 8 mm (calibrated)

$ 6.08

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3.03ctw White Topaz, Cushion, VVS-VS

3.03ctw White Topaz, Cushion, VVS-VS

4.6 x 4.5 mm

$ 16.60

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11.28ctw Yellow Citrine, Oval, VVS-VS

11.28ctw Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 67.72

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2.86ct Yellow Citrine, Oval, VVS-VS

2.86ct Yellow Citrine, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 15.67

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1.50ct Orange Hessonite Garnet, Emerald Cut, VVS-VS

1.50ct Orange Hessonite Garnet, Emerald Cut, VVS-VS

7 x 5 mm (calibrated)

$ 22.31

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60.24ct Multicolor Rhodonite, Oval, Opaque

60.24ct Multicolor Rhodonite, Oval, Opaque

35.3 x 24.9 mm

$ 34.80

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6.81ct Violet Amethyst, Fancy, Transparent

6.81ct Violet Amethyst, Fancy, Transparent

12.1 x 10.6 mm

$ 33.91

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5.62ct Multicolor Agate, Oval, Opaque

5.62ct Multicolor Agate, Oval, Opaque

12.4 x 11.3 mm

$ 9.51

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4.12ct Yellow Citrine, Oval, VVS-VS

4.12ct Yellow Citrine, Oval, VVS-VS

12 x 10 mm (calibrated)

$ 31.59

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10.38ct Black Tourmaline, Oval, Opaque

10.38ct Black Tourmaline, Oval, Opaque

15.6 x 12.6 mm

$ 51.69

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2.54ct Brown Smoky Quartz, Oval, VS

2.54ct Brown Smoky Quartz, Oval, VS

10 x 8 mm (calibrated)

$ 17.71

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6.42ctw Violet Amethyst, Oval, Transparent

6.42ctw Violet Amethyst, Oval, Transparent

11 x 9 mm (calibrated)

$ 25.40

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23.53ct Multicolor Rhodochrosite, Oval, Opaque

23.53ct Multicolor Rhodochrosite, Oval, Opaque

20 x 15 mm (calibrated)

$ 51.56

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1.41ct Orange Hessonite Garnet, Emerald Cut, VVS-VS

1.41ct Orange Hessonite Garnet, Emerald Cut, VVS-VS

7 x 5 mm (calibrated)

$ 28.09

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1.15ct Yellow Citrine, Round, VVS

1.15ct Yellow Citrine, Round, VVS

7 mm (calibrated)

$ 9.16

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!

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Navigating the site was very easy and the photos of the exact gem you would be purchasing was well done.

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Filters need to be improved but rest of website is great

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The site provided lots of detail, factual data, and good photos. I also like the availability of searching by price range as well as by the type of stone.

Posted By SLIntuitive Donna in July, 2025
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Overall Rating -> 9 star ratings

I did not realize these stones were of jewelry quality. They are really beautiful, just not what I was expecting which was more of a natural stone.

Posted By Jewelry Quality Stones in July, 2025
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