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Untreated Gemstones

Browse our selection of untreated gemstones featuring natural color, clarity and beauty without enhancements.

Untreated Gemstones Weight
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32.77ct Orange Druzy Citrine, Pear Shape, Opaque

32.77ct Orange Druzy Citrine, Pear Shape, Opaque

28 x 16.6 mm

$ 41.83

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2.00ct Orange Sunstone, Round, Translucent

2.00ct Orange Sunstone, Round, Translucent

9 mm (calibrated)

$ 11.96

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12.65ct Multicolor Fossil Coral, Oval, Opaque

12.65ct Multicolor Fossil Coral, Oval, Opaque

20 x 15 mm (calibrated)

$ 15.79

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0.98ctw Orange Zircon, Oval, VVS

0.98ctw Orange Zircon, Oval, VVS

5.2 x 3.9 mm

$ 24.40

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15.16ct Violet Amethyst, Round, VVS

15.16ct Violet Amethyst, Round, VVS

16 mm (calibrated)

$ 105.69

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0.03ct Black Diamond, Round, Opaque

0.03ct Black Diamond, Round, Opaque

1.9 mm (calibrated)

$ 10.27

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11.87ctw White Topaz, Oval, VVS-VS

11.87ctw White Topaz, Oval, VVS-VS

12 x 10 mm (calibrated)

$ 78.82

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1.30ct Multicolor Opal, Oval, Translucent

1.30ct Multicolor Opal, Oval, Translucent

9 x 7 mm (calibrated)

$ 56.97

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2.19ct Orange Hessonite Garnet, Oval, VS-SI

2.19ct Orange Hessonite Garnet, Oval, VS-SI

8.5 x 7 mm

$ 37.89

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8.26ct Pink Morganite, Pear Shape, Translucent

8.26ct Pink Morganite, Pear Shape, Translucent

16 x 12 mm (calibrated)

$ 90.49

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1.79ct Pink Tourmaline, Oval, Transparent

1.79ct Pink Tourmaline, Oval, Transparent

8.1 x 6.3 mm

$ 30.69

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3.91ct Yellow Citrine, Oval, VVS-VS

3.91ct Yellow Citrine, Oval, VVS-VS

13.5 x 9.8 mm

$ 23.47

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3.80ctw Pink Rose Quartz, Emerald Cut, Transparent

3.80ctw Pink Rose Quartz, Emerald Cut, Transparent

7.6 x 7.5 mm

$ 20.82

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1.56ct Orange Hessonite Garnet, Oval, VVS-VS

1.56ct Orange Hessonite Garnet, Oval, VVS-VS

7.6 x 6.1 mm

$ 31.08

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13.08ctw Green Prehnite, Fancy, Translucent

13.08ctw Green Prehnite, Fancy, Translucent

16.5 x 11.2 mm

$ 21.50

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1.73ct Green Tourmaline, Oval, VS-SI

1.73ct Green Tourmaline, Oval, VS-SI

8.2 x 6.8 mm

$ 201.03

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0.51ct Orange Zircon, Oval, VVS-VS

0.51ct Orange Zircon, Oval, VVS-VS

5 x 4 mm (calibrated)

$ 12.70

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1.45ct Green Tourmaline, Emerald Cut, VVS-VS

1.45ct Green Tourmaline, Emerald Cut, VVS-VS

14.4 x 3.4 mm

$ 34.95

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2.92ct Violet Amethyst, Trillion, VVS-VS

2.92ct Violet Amethyst, Trillion, VVS-VS

10 x 10 mm (calibrated)

$ 20.36

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19.36ct Pink Rose Quartz, Oval, Translucent

19.36ct Pink Rose Quartz, Oval, Translucent

20 x 16.2 mm

$ 23.34

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3.99ct Yellow Citrine, Oval, VVS

3.99ct Yellow Citrine, Oval, VVS

14 x 10 mm (calibrated)

$ 23.96

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2.05ctw Red Pyrope Garnet, Marquise, VVS-VS

2.05ctw Red Pyrope Garnet, Marquise, VVS-VS

10 x 5 mm

$ 17.97

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7.32ct Green Quartz Cat'S Eye, Oval, Opaque

7.32ct Green Quartz Cat'S Eye, Oval, Opaque

12.7 x 10.5 mm

$ 24.06

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8.79ct Pink Rose Quartz, Emerald Cut, Transparent

8.79ct Pink Rose Quartz, Emerald Cut, Transparent

12.5 x 12.2 mm

$ 48.16

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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 -> 9 star ratings

The purchasing process is fairly quick and straightforward and for me user friendly so it probably took more or less than 3 minutes to purchase and pay for the items. I wish there was a discount offer for multiple items to encourage us buyers to purchase more an incentive and add more sales in your end. Besides that, it's been a great purchasing experience and will continue to shop as I am a repeat customer and have bought from your store many times before. Thank you.

Posted By Emmanuel in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

this site is awesome. I was able to look at the products think about purchasing and come back and find the same products. With the amount of inventory gem select has. Its awesome to be able to filter the way that they allow you too.

Posted By Tommyp in November, 2025
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 -> 10 star ratings

They have a wonderful selection of gems of all sorts, shapes, cuts, and quality. I am very particular about the quality of stones I buy, and found many with VVS clarity and excellent cut and polish. I am thrilled with each of the stones I purchased, and would definitely recommend GemSelect to everyone.

Posted By Debsarabs in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Enjoy viewing the selections. Excellent product

Posted By ToRa.62 in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

On the clarity options it goes "and better" so if youre looking for si specifically and you click si and better it still shows you basically everything. It just removes the opaques. Itd be nice if it was vs only, vss only, si only, etc

Posted By Iamnotakrustykrab in December, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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