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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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10.39ct Black Tourmaline, Oval, Opaque

10.39ct Black Tourmaline, Oval, Opaque

15 x 12.4 mm

$ 51.74

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1.78ct Yellow Citrine, Oval, Transparent

1.78ct Yellow Citrine, Oval, Transparent

8 x 6 mm (calibrated)

$ 11.70

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11.44ct Bi-Color Ametrine, Oval, VVS

11.44ct Bi-Color Ametrine, Oval, VVS

15.7 x 12.9 mm

$ 87.74

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1.00ct Blue Kyanite, Oval, SI

1.00ct Blue Kyanite, Oval, SI

7 x 5 mm (calibrated)

$ 21.91

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1.52ct Pink Tourmaline, Emerald Cut, VS

1.52ct Pink Tourmaline, Emerald Cut, VS

10.3 x 4.5 mm

$ 114.91

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1.21ctw Orange Zircon, Oval, VVS-VS

1.21ctw Orange Zircon, Oval, VVS-VS

5.2 x 4 mm

$ 30.13

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1.05ctw Red Pyrope Garnet, Square, VS

1.05ctw Red Pyrope Garnet, Square, VS

4.2 x 4.1 mm

$ 8.06

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0.96ct Yellow Color-Change Diaspore, Emerald Cut, VVS-VS

0.96ct Yellow Color-Change Diaspore, Emerald Cut, VVS-VS

5.9 x 4.7 mm

$ 29.45

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61.95ct Green Amazonite, Oval, Opaque

61.95ct Green Amazonite, Oval, Opaque

46.5 x 29.7 mm

$ 49.36

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9.77ct Green Maw-Sit-Sit, Baguette, Opaque

9.77ct Green Maw-Sit-Sit, Baguette, Opaque

11.6 x 10.6 mm

$ 32.11

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3.68ct Yellow Citrine, Oval, VVS-VS

3.68ct Yellow Citrine, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 29.32

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3.17ctw Yellow Citrine, Emerald Cut, VVS

3.17ctw Yellow Citrine, Emerald Cut, VVS

8 x 6 mm (calibrated)

$ 25.26

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52.73ct Yellow Rutile Quartz, Oval, Translucent
Rutile Quartz Product Video (449099)

52.73ct Yellow Rutile Quartz, Oval, Translucent

34.8 x 22.4 mm

$ 57.77

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7.34ct Green Jadeite, Oval, Translucent

7.34ct Green Jadeite, Oval, Translucent

16.8 x 12.2 mm

$ 16.09

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4.89ct Multicolor Rainbow Pyrite, Trillion, Opaque

4.89ct Multicolor Rainbow Pyrite, Trillion, Opaque

13 x 11 mm (calibrated)

$ 17.19

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2.68ct Violet Amethyst, Trillion, VVS-VS

2.68ct Violet Amethyst, Trillion, VVS-VS

10 x 10 mm (calibrated)

$ 21.36

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0.23ctw White Diamond, Round, VVS-VS
Diamond Product Video (565140)

0.23ctw White Diamond, Round, VVS-VS

3 mm (calibrated)

$ 379.88

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11.02ct Turquoise Fluorite, Cushion, Transparent

11.02ct Turquoise Fluorite, Cushion, Transparent

14 x 10 mm (calibrated)

$ 26.24

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1.10ct Green Peridot, Oval, VS

1.10ct Green Peridot, Oval, VS

7.5 x 5.9 mm

$ 9.86

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0.47ct Orange Sphalerite, Round, VS-SI

0.47ct Orange Sphalerite, Round, VS-SI

4.5 mm (calibrated)

$ 23.41

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2.38ct Green Malachite, Oval, Opaque

2.38ct Green Malachite, Oval, Opaque

8.6 x 6.5 mm

$ 1.83

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3.61ct Multicolor Labradorite, Marquise, Translucent

3.61ct Multicolor Labradorite, Marquise, Translucent

14 x 7 mm (calibrated)

$ 7.98

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1.73ct Yellow Citrine, Heart, VVS

1.73ct Yellow Citrine, Heart, VVS

8 x 8 mm (calibrated)

$ 12.06

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18.98ct Multicolor Rainbow Pyrite, Heart, Opaque

18.98ct Multicolor Rainbow Pyrite, Heart, Opaque

24.5 x 22.4 mm

$ 49.15

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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

All these questions, and I don't have to give any blood. What a Deal... I absolutely enjoy the Gem Select emails every month. This one today was special. I always say, I'll know it when I see it. This stone today was the One. Odd and Intriguing. Thank You So Much for all that you do.

Posted By G.W. in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great selection. Maybe too great i kept adding and deleting stuff because i found better looking ones

Posted By Edsor works in October, 2025
Source: Bizrate

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 -> 9 star ratings

Everything was good, the purchase was what I expected and what they show is what you get.

Posted By Mr. in March, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

First time using this website. It was both exciting finding things in my price range and things Iam gonna save up for and use in other pieces. I love that the picture of the gem is the exact gem I'll be buying. I haven't tested the gems yes but they said they sold me 100% natural gems.

Posted By Salvo in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Recomendado Totalmente Los Productos Se Entregaron A Tiempo

Posted By Alexis in May, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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