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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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1.67ct Green Chrysoprase, Baguette, Opaque

1.67ct Green Chrysoprase, Baguette, Opaque

7.9 x 7.3 mm

$ 13.86

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1.45ct Yellow Beryl, Round, VVS-VS

1.45ct Yellow Beryl, Round, VVS-VS

8 mm (calibrated)

$ 34.66

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13.43ct Yellow Rutile Quartz, Pear Shape, Transparent

13.43ct Yellow Rutile Quartz, Pear Shape, Transparent

18 x 13 mm (calibrated)

$ 36.50

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7.00ctw Red Almandine Garnet, Oval, VVS-VS

7.00ctw Red Almandine Garnet, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 244.02

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1.35ct Gray Sillimanite Cat'S Eye, Oval, Transparent

1.35ct Gray Sillimanite Cat'S Eye, Oval, Transparent

7.9 x 4.6 mm

$ 4.27

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5.42ct Yellow Morganite, Oval, VS
Morganite Product Video (714194)

5.42ct Yellow Morganite, Oval, VS

12 x 10 mm (calibrated)

$ 242.92

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37.99ctw Gray Hematite, Round, Opaque

37.99ctw Gray Hematite, Round, Opaque

15 mm (calibrated)

$ 37.04

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14.19ct White Rutile Quartz, Sphere / Ball, Translucent

14.19ct White Rutile Quartz, Sphere / Ball, Translucent

13 mm (calibrated)

$ 16.33

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4.68ct Pink Morganite, Oval, Transparent

4.68ct Pink Morganite, Oval, Transparent

12 x 10 mm (calibrated)

$ 46.61

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1.91ct Orange Hessonite Garnet, Cushion, VS

1.91ct Orange Hessonite Garnet, Cushion, VS

6 x 6 mm (calibrated)

$ 28.47

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8.68ct Pink Strawberry Quartz, Oval, Translucent

8.68ct Pink Strawberry Quartz, Oval, Translucent

12 x 10 mm (calibrated)

$ 52.12

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6.10ctw White Moonstone, Round, Translucent

6.10ctw White Moonstone, Round, Translucent

9 mm (calibrated)

$ 16.72

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20.00ct Green Amazonite, Fancy, Translucent

20.00ct Green Amazonite, Fancy, Translucent

33.6 x 8.7 mm

$ 10.96

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2.34ct Violet Amethyst, Trillion, VVS-VS

2.34ct Violet Amethyst, Trillion, VVS-VS

9 x 9 mm (calibrated)

$ 17.94

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10.28ct Green Bloodstone, Oval, Opaque

10.28ct Green Bloodstone, Oval, Opaque

18 x 13 mm (calibrated)

$ 15.36

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4.08ct Yellow Citrine, Oval, VVS-VS

4.08ct Yellow Citrine, Oval, VVS-VS

12.9 x 8.3 mm

$ 24.72

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5.42ct Yellow Citrine, Oval, VVS-VS

5.42ct Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 32.54

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0.58ct Multicolor Labradorite, Pear Shape, Translucent

0.58ct Multicolor Labradorite, Pear Shape, Translucent

6.4 x 4.3 mm

$ 1.29

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4.63ct Pink Strawberry Quartz, Oval, Translucent

4.63ct Pink Strawberry Quartz, Oval, Translucent

11 x 9 mm (calibrated)

$ 35.51

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9.61ctw Yellow Citrine, Oval, VVS-VS

9.61ctw Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 57.70

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0.73ct Multicolor Opal, Oval, Translucent

0.73ct Multicolor Opal, Oval, Translucent

8 x 6 mm (calibrated)

$ 33.60

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20.19ctw Multicolor Fossil Coral, Fancy, Opaque

20.19ctw Multicolor Fossil Coral, Fancy, Opaque

20.4 x 10.3 mm

$ 22.12

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0.33ct Gray Cat'S Eye Alexandrite, Oval, Opaque

0.33ct Gray Cat'S Eye Alexandrite, Oval, Opaque

5 x 3.4 mm

$ 54.78

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1.31ct Yellow Citrine, Round, VS

1.31ct Yellow Citrine, Round, VS

7 mm (calibrated)

$ 9.13

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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

I needed a very specific color of tourmaline and Gem Select had it. I had to get the client to agree and then ordered the stone. It arrived better than pictured and we all were very happy.

Posted By Tim W in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Enjoy every moment

Posted By Ferns in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great website, easy to navigate, and loads quickly. Have bought here before, very pleased!

Posted By SallyO in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Easy to use. No issues. Large selection of gems.

Posted By CLTCJH in February, 2026
Source: Bizrate

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
Source: Bizrate

Overall Rating -> 10 star ratings

My experience has always been fantastic. Today I saved 6 gems to email a customer looking for a particular color blend to fit into an east west setting, so her options were limited, but we found one she wanted, deleted all the others in the cart and order the gem she selected. It was helpful to be able to put them in the cart so I could save them until she selected the one she wanted without having to research all of them again.

Posted By RJ in January, 2026
Source: Bizrate
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