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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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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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0.64ct Yellow Citrine, Cushion, Transparent

5 x 5 mm (calibrated)

$ 4.78

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0.07ct Black Diamond, Round, Opaque

2.6 mm (calibrated)

$ 23.96

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1.26ct Orange Zircon, Emerald Cut, VVS

7 x 4.7 mm

$ 20.71

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1.59ct Yellow Tourmaline, Pear Shape, VVS-VS

9 x 7 mm (calibrated)

$ 65.47

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1.20ct Blue Kyanite, Oval, SI

7 x 5 mm (calibrated)

$ 29.88

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5.14ct Pink Strawberry Quartz, Oval, Translucent

14 x 10 mm (calibrated)

$ 30.98

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1.76ctw Green Demantoid Garnet, Oval, VS

4.5 x 3.7 mm

$ 192.83

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9.73ct Pink Rose Quartz, Pear Shape, Transparent

20.7 x 14.3 mm

$ 33.90

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4.46ctw Yellow Citrine, Oval, VS

10 x 8 mm (calibrated)

$ 24.44

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2.60ct Orange Hessonite Garnet, Oval, VS-SI

9.3 x 7.6 mm

$ 45.90

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1.55ct Green Tourmaline, Emerald Cut, VVS-VS

13.2 x 3.7 mm

$ 42.46

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2.30ct Orange Zircon, Oval, VS

8 x 6 mm (calibrated)

$ 62.44

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1.42ct Orange Hessonite Garnet, Baguette, SI

7 x 5 mm (calibrated)

$ 31.12

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0.46ct Blue Kyanite, Round, SI

4.3 mm

$ 11.45

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33.26ct Blue Turquoise, Oval, Opaque

27.8 x 17.8 mm

$ 99.38

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4.20ctw Red Almandine Garnet, Round, Transparent

3 mm (calibrated)

$ 23.01

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14.55ct White Rainbow Moonstone, Pear Shape, Transparent

20 x 15 mm (calibrated)

$ 115.93

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1.06ct Green Tourmaline, Emerald Cut, VVS-VS

12.3 x 3.2 mm

$ 52.79

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2.69ctw Orange Hessonite Garnet, Emerald Cut, VS

6 x 6 mm (calibrated)

$ 53.05

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8.04ct Green Druzy Variscite, Fancy, Opaque

26.9 x 13.5 mm

$ 8.25

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5.95ctw Brown Tiger'S Eye, Oval, Opaque

10 x 8 mm (calibrated)

$ 9.88

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4.72ctw Multicolor Labradorite, Round, Translucent

8 mm (calibrated)

$ 5.59

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1.33ctw Orange Spessartite Garnet, Oval, VS-SI

5.1 x 4.2 mm

$ 46.36

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14.37ct Multicolor Labradorite, Round, Translucent

16 mm (calibrated)

$ 17.17

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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

Fast snd easy to find what I was looking for

Posted By Bawb in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I have purchased stones from gem select in the past and have been very satisfied. I expect to repeat that experience with this purchase as well

Posted By Marti in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

My experience was done with ease

Posted By Barb in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

A pleasant experience and many choices to choose from

Posted By Krackenking in November, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

It was great!

Posted By Annie in September, 2025
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
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