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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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For Example: 8-9
Bi-color Untreated Gemstones
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Multicolor Untreated Gemstones
Orange Untreated Gemstones
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1.58ct Yellow Beryl, Oval, VVS

1.58ct Yellow Beryl, Oval, VVS

9 x 7 mm (calibrated)

$ 31.47

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1.60ct Red Tourmaline, Cushion, VS

1.60ct Red Tourmaline, Cushion, VS

8.3 x 6.7 mm

$ 239.04

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6.38ct Multicolor Labradorite, Round, Translucent

6.38ct Multicolor Labradorite, Round, Translucent

14 mm (calibrated)

$ 13.73

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2.96ct Turquoise Fluorite, Oval, Transparent

2.96ct Turquoise Fluorite, Oval, Transparent

7.8 x 7 mm

$ 11.79

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0.47ct Yellow Color-Change Diaspore, Oval, VVS

0.47ct Yellow Color-Change Diaspore, Oval, VVS

5.3 x 4 mm

$ 24.81

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2.32ctw Orange Zircon, Round, VVS-VS

2.32ctw Orange Zircon, Round, VVS-VS

6 mm (calibrated)

$ 55.34

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1.01ct Green Peridot, Emerald Cut, VS

1.01ct Green Peridot, Emerald Cut, VS

7 x 5 mm (calibrated)

$ 15.09

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34.41ct Violet Amethyst, Oval, VVS
Amethyst Product Video (734697)

34.41ct Violet Amethyst, Oval, VVS

25.3 x 18.9 mm

$ 274.18

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1.67ct Orange Moonstone, Trillion, Translucent

1.67ct Orange Moonstone, Trillion, Translucent

8.1 x 7.7 mm

$ 3.33

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0.79ct Green Peridot, Oval, VS

0.79ct Green Peridot, Oval, VS

7 x 5 mm (calibrated)

$ 5.51

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3.02ctw Red Pyrope Garnet, Heart, VVS-VS

3.02ctw Red Pyrope Garnet, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 23.16

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5.67ct Brown Smoky Quartz, Pear Shape, VVS

5.67ct Brown Smoky Quartz, Pear Shape, VVS

15.2 x 11.1 mm

$ 11.30

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2.03ctw White Sillimanite Cat'S Eye, Oval, Transparent

2.03ctw White Sillimanite Cat'S Eye, Oval, Transparent

7 x 5 mm (calibrated)

$ 6.67

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0.95ctw Red Pyrope Garnet, Heart, VVS-VS

0.95ctw Red Pyrope Garnet, Heart, VVS-VS

5 x 5 mm (calibrated)

$ 7.29

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40.32ct Blue Sodalite, Fancy, Opaque
Sodalite Product Video (648331)

40.32ct Blue Sodalite, Fancy, Opaque

33.3 x 25.8 mm

$ 40.16

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4.00ctw Green Prehnite, Round, Transparent

4.00ctw Green Prehnite, Round, Transparent

7.5 mm (calibrated)

$ 21.73

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2.10ct Green Tourmaline, Emerald Cut, VVS-VS

2.10ct Green Tourmaline, Emerald Cut, VVS-VS

18.5 x 3.7 mm

$ 69.02

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2.21ct Orange Hessonite Garnet, Cushion, SI

2.21ct Orange Hessonite Garnet, Cushion, SI

8 x 6 mm (calibrated)

$ 37.16

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17.99ct Multicolor Labradorite, Pear Shape, Opaque

17.99ct Multicolor Labradorite, Pear Shape, Opaque

27 x 17.1 mm

$ 16.13

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5.42ct Blue Aquamarine, Oval, VS
Aquamarine Product Video (453033)

5.42ct Blue Aquamarine, Oval, VS

10.9 x 9.8 mm

$ 782.76

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1.57ct Violet Amethyst, Heart, VS

1.57ct Violet Amethyst, Heart, VS

8 x 8 mm (calibrated)

$ 12.04

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2.85ct Violet Amethyst, Trillion, VVS-VS

2.85ct Violet Amethyst, Trillion, VVS-VS

10 x 10 mm (calibrated)

$ 19.87

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8.20ctw Multicolor Pietersite, Pear Shape, Opaque

8.20ctw Multicolor Pietersite, Pear Shape, Opaque

17.5 x 11.3 mm

$ 19.19

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1.75ct Multicolor Opal, Oval, Translucent

1.75ct Multicolor Opal, Oval, Translucent

10.6 x 8.4 mm

$ 80.53

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 -> 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 -> 9 star ratings

Very good and simple exchange

Posted By Waylon in March, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

I visited several online loose stone shops trying to find rare stones. I finally found one that I've been looking for here, and very satisfied. Looking forward to receive the item in 3 weeks.

Posted By Atsu in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I could see the actual gem I was buying

Posted By Bugs in December, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Will know more once order received

Posted By Jim in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

All items were delivered on time with all items meeting or exceeding my expectations. Cut, clarity and color were very close to the photos and description.

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