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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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Yellow Untreated Gemstones
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1.59ct Orange Hessonite Garnet, Emerald Cut, VS-SI

1.59ct Orange Hessonite Garnet, Emerald Cut, VS-SI

7 x 5 mm (calibrated)

$ 31.36

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1.15ct Yellow Chrysoberyl, Oval, VVS-VS

1.15ct Yellow Chrysoberyl, Oval, VVS-VS

7.4 x 5.6 mm

$ 134.09

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2.86ct Yellow Apatite, Oval, VS

2.86ct Yellow Apatite, Oval, VS

10.5 x 8.5 mm

$ 147.27

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3.07ctw Yellow Citrine, Square, VS

3.07ctw Yellow Citrine, Square, VS

7 x 7 mm (calibrated)

$ 21.32

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1.58ct Green Sphene, Oval, Transparent

1.58ct Green Sphene, Oval, Transparent

6.8 x 6.3 mm

$ 7.87

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0.25ct Orange Spessartite Garnet, Oval, VS-SI

0.25ct Orange Spessartite Garnet, Oval, VS-SI

4.2 x 3.5 mm

$ 8.47

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11.14ct White Dendritic Agate, Pear Shape, Opaque

11.14ct White Dendritic Agate, Pear Shape, Opaque

25.3 x 12.6 mm

$ 7.77

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13.27ct Black Tourmaline, Emerald Cut, Opaque

13.27ct Black Tourmaline, Emerald Cut, Opaque

18.9 x 9.7 mm

$ 66.08

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1.96ct Orange Moonstone, Cushion, Translucent

1.96ct Orange Moonstone, Cushion, Translucent

8 x 8 mm (calibrated)

$ 3.90

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9.46ct Yellow Apatite, Emerald Cut, VS
Apatite Product Video (395815)

9.46ct Yellow Apatite, Emerald Cut, VS

11 x 11 mm (calibrated)

$ 384.74

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0.64ct Orange Spessartite Garnet, Oval, VS

0.64ct Orange Spessartite Garnet, Oval, VS

6 x 4 mm (calibrated)

$ 22.31

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2.17ct Orange Hessonite Garnet, Oval, VS-SI

2.17ct Orange Hessonite Garnet, Oval, VS-SI

8.5 x 7.1 mm

$ 30.91

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0.81ct Pink Malaya Garnet, Round, VS

0.81ct Pink Malaya Garnet, Round, VS

5.5 mm (calibrated)

$ 35.50

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2.39ct Multicolor Labradorite, Pear Shape, Translucent

2.39ct Multicolor Labradorite, Pear Shape, Translucent

10 x 7 mm (calibrated)

$ 5.29

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1.27ct Multicolor Opal, Marquise, Transparent

1.27ct Multicolor Opal, Marquise, Transparent

14.8 x 6.5 mm

$ 55.66

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0.84ct Blue Kyanite, Oval, VS

0.84ct Blue Kyanite, Oval, VS

7 x 5 mm (calibrated)

$ 20.92

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1.41ct Orange Zircon, Emerald Cut, VS-SI

1.41ct Orange Zircon, Emerald Cut, VS-SI

7.2 x 5.2 mm

$ 23.17

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2.05ct Red Almandine Garnet, Baguette, VVS

2.05ct Red Almandine Garnet, Baguette, VVS

10 x 4.9 mm

$ 17.02

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1.98ct Green Prehnite, Oval, Transparent/Translucent

1.98ct Green Prehnite, Oval, Transparent/Translucent

9 x 6 mm (calibrated)

$ 5.87

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8.53ct Yellow Citrine, Briolette, VVS

8.53ct Yellow Citrine, Briolette, VVS

15.9 x 9.5 mm

$ 48.51

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12.19ct White Rainbow Moonstone, Pear Shape, Transparent

12.19ct White Rainbow Moonstone, Pear Shape, Transparent

18 x 13 mm (calibrated)

$ 218.54

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3.90ct Yellow Citrine, Oval, VVS-VS

3.90ct Yellow Citrine, Oval, VVS-VS

12 x 10 mm (calibrated)

$ 21.36

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1.08ct Orange Zircon, Oval, VVS

1.08ct Orange Zircon, Oval, VVS

5.9 x 4.9 mm

$ 16.14

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1.08ct Yellow Color-Change Diaspore, Emerald Cut, VVS-VS

1.08ct Yellow Color-Change Diaspore, Emerald Cut, VVS-VS

9 x 4.1 mm

$ 57.01

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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

Love beauty, color, quality, and price of these gems. Personal projects and will come here soon and everytime.

Posted By Darkstar in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I was looking for high-quality amethyst on this site, and I was able to compare size, color, and weight in detail before making a purchase.

Posted By Atsuhisa in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I can pick and choose from large selection and find just what I need for .y projects, currently my cane.

Posted By Darkstar731 in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Love how easy the site is to use. Really love that the pictures are of actual product.

Posted By LeAnn in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Always get a nice gemstone. Just like the picture. Never disappointed

Posted By Ron T in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Wonderful purchase, can't wait to see the stone.

Posted By Tim in January, 2026
Source: Bizrate
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