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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
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Yellow Untreated Gemstones
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4.75ct Multicolor Fire Agate, Fancy, Opaque

14 x 9 mm (calibrated)

$ 37.11

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6.32ct Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 37.94

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8.18ct Multicolor Jasper, Pear Shape, Opaque

21 x 14.1 mm

$ 8.96

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19.21ct Multicolor Quartz With Marcasite, Oval, Transparent

21 x 16.6 mm

$ 122.91

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36.78ct Green Amazonite, Oval, Opaque

34.6 x 19 mm

$ 29.30

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4.73ct Yellow Citrine, Briolette, VVS

12 x 8 mm (calibrated)

$ 25.50

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17.64ct White Howlite, Round, Opaque

20 mm (calibrated)

$ 8.26

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11.10ct Yellow Apatite, Oval, VS-SI

16 x 12 mm (calibrated)

$ 226.59

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1.15ct Green Tourmaline, Emerald Cut, VS

15.5 x 3.1 mm

$ 57.27

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2.10ct Green Tourmaline, Emerald Cut, VVS-VS

15.3 x 3.9 mm

$ 57.52

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13.68ct White Rainbow Moonstone, Marquise, Transparent

23.1 x 11.8 mm

$ 109.00

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0.68ct Pink Morganite, Pear Shape, VVS-VS

7.7 x 5 mm

$ 40.98

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20.63ct Green Fluorite, Oval, Transparent

17 x 14.3 mm

$ 90.40

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0.65ct Yellow Color-Change Diaspore, Oval, VVS-VS

6.4 x 4.6 mm

$ 22.82

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0.95ct Green Sphene, Round, VS-SI

5.5 mm (calibrated)

$ 57.25

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3.95ct Multicolor Opal, Pear Shape, Translucent

15.1 x 10.8 mm

$ 87.26

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5.57ctw Green Peridot, Oval, VS

8 x 6 mm (calibrated)

$ 39.06

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4.73ct Pink Rose Quartz, Emerald Cut, Transparent

10 x 10 mm (calibrated)

$ 23.56

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5.22ct Violet Amethyst, Briolette, VS

12 x 8 mm (calibrated)

$ 22.87

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1.10ct Multicolor Opal, Pear Shape, Transparent

11.1 x 6.6 mm

$ 27.39

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7.87ct Yellow Citrine, Emerald Cut, VVS

14 x 10 mm (calibrated)

$ 43.12

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1.97ct Yellow Citrine, Round, VVS

8 mm (calibrated)

$ 15.70

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1.02ct Pink Spinel, Oval, VS

6.5 x 5 mm

$ 507.96

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0.13ctw Black Diamond, Square, Opaque

2.2 x 2.1 mm

$ 64.74

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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

Very large selection from affordable to high end I will be coming back to shop again!

Posted By GreenGator in August, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

I've purchased things from GemSelect before. What you see is what you get, which is not always the case with gem sites online. You can find some good value with gem select, and I will buy from them again.

Posted By Meyeusername in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

the selection is good as are the prices

Posted By Old man in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

It was easy to navigate

Posted By GemGod in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I am filling a small treasure chest and picked a nice amethyst.

Posted By VinnyD in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great experience. I can't wait to explore on the website further.

Posted By Kymmie in September, 2025
Source: Bizrate
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