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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
Untreated Gemstones Clarity
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Untreated Gemstones Treatment

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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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0.63ct Green Tourmaline, Round, Transparent

0.63ct Green Tourmaline, Round, Transparent

5 mm (calibrated)

$ 12.55

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5.55ctw Yellow Citrine, Oval, VVS

5.55ctw Yellow Citrine, Oval, VVS

10 x 8 mm (calibrated)

$ 27.64

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0.50ct Pink Morganite, Pear Shape, VVS-VS

0.50ct Pink Morganite, Pear Shape, VVS-VS

7.7 x 4 mm

$ 30.13

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11.73ct Black Tourmaline, Emerald Cut, Opaque

11.73ct Black Tourmaline, Emerald Cut, Opaque

16.3 x 10.3 mm

$ 58.42

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4.16ct Orange Sunstone, Oval, Translucent

4.16ct Orange Sunstone, Oval, Translucent

12 x 10 mm (calibrated)

$ 18.82

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3.78ct Purple Kunzite, Pear Shape, VS
Kunzite Product Video (691185)

3.78ct Purple Kunzite, Pear Shape, VS

9.8 x 8.4 mm

$ 104.02

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21.98ct Brown Moonstone, Round, Translucent
Moonstone Product Video (406636)

21.98ct Brown Moonstone, Round, Translucent

18 mm (calibrated)

$ 48.16

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7.44ctw Violet Amethyst, Oval, Transparent

7.44ctw Violet Amethyst, Oval, Transparent

11 x 9 mm (calibrated)

$ 33.96

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1.40ct Orange Hessonite Garnet, Baguette, VS-SI

1.40ct Orange Hessonite Garnet, Baguette, VS-SI

7 x 5 mm (calibrated)

$ 30.68

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3.36ct Pink Strawberry Quartz, Oval, Translucent

3.36ct Pink Strawberry Quartz, Oval, Translucent

10 x 8 mm (calibrated)

$ 25.76

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6.97ct Pink Kunzite, Cushion, VS

6.97ct Pink Kunzite, Cushion, VS

12.4 x 8.6 mm

$ 191.81

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0.67ct Yellow Color-Change Diaspore, Emerald Cut, VVS-VS

0.67ct Yellow Color-Change Diaspore, Emerald Cut, VVS-VS

6.1 x 4.3 mm

$ 23.52

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1.97ct Yellow Citrine, Trillion, VVS-VS

1.97ct Yellow Citrine, Trillion, VVS-VS

9 x 9 mm (calibrated)

$ 12.19

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8.73ct Multicolor Labradorite, Pear Shape, Translucent

8.73ct Multicolor Labradorite, Pear Shape, Translucent

18 x 13 mm (calibrated)

$ 19.31

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1.21ct Yellow Citrine, Trillion, VS

1.21ct Yellow Citrine, Trillion, VS

7 x 7 mm (calibrated)

$ 6.63

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14.98ct Brown Tiger'S Eye, Baguette, Opaque

14.98ct Brown Tiger'S Eye, Baguette, Opaque

18 x 13 mm (calibrated)

$ 14.92

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2.68ct Yellow Sphene, Oval, Translucent

2.68ct Yellow Sphene, Oval, Translucent

8.5 x 7.1 mm

$ 17.62

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12.73ct Multicolor Boulder Opal, Trillion, Opaque

12.73ct Multicolor Boulder Opal, Trillion, Opaque

16 x 16 mm (calibrated)

$ 63.40

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2.47ct Green Peridot, Cushion, VS

2.47ct Green Peridot, Cushion, VS

9 x 7 mm (calibrated)

$ 96.88

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1.35ct Pink Morganite, Oval, VVS

1.35ct Pink Morganite, Oval, VVS

8.3 x 6.4 mm

$ 59.16

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2.83ct Pink Strawberry Quartz, Oval, Transparent

2.83ct Pink Strawberry Quartz, Oval, Transparent

10 x 8 mm (calibrated)

$ 21.02

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7.53ct Yellow Rutile Quartz, Pear Shape, Translucent

7.53ct Yellow Rutile Quartz, Pear Shape, Translucent

15 x 10.9 mm

$ 20.46

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0.80ctw White Rainbow Moonstone, Oval, Transparent

0.80ctw White Rainbow Moonstone, Oval, Transparent

6 x 4 mm (calibrated)

$ 25.50

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0.77ct Yellow Citrine, Heart, VVS-VS

0.77ct Yellow Citrine, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 5.37

View Gem
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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

It was fine . Wish there had been more round stones to select from

Posted By Emm in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Absolutely love the website, selection and products. Can you guys add a gemstones with inclusions tab. I like those it'd be nice to have them all in one place but i do understand it would be alot of work to go through and categorize them. Thank you anyways

Posted By The homie edgar in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I found the filter options excellent. Yours was the third site I visited (asked chat got for reputable online sellers of loose gems) and the first I purchased from as I was able to easily find what I was looking for.

Posted By Kelly in May, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

It was great!

Posted By Annie in September, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

Site worked well and helped me find a rock that matched what I was looking for. Well within budget and I trust it will show up, so that's definitely positive. Not much else to it. Satisfied.

Posted By Big Ricky in May, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Nothing bad to report. Everything is as expected. The gems and the price are all very good.

Posted By Dafanatic in August, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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