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Untreated Gemstones

Browse our selection of untreated gemstones featuring natural color, clarity and beauty without enhancements.

Untreated Gemstones Weight
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7.09ct Blue Larimar, Round, Opaque

7.09ct Blue Larimar, Round, Opaque

12 mm (calibrated)

$ 61.37

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3.06ctw Yellow Beryl, Oval, VVS

3.06ctw Yellow Beryl, Oval, VVS

9 x 7 mm (calibrated)

$ 60.96

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8.72ctw Violet Amethyst, Oval, Transparent

8.72ctw Violet Amethyst, Oval, Transparent

12 x 8 mm (calibrated)

$ 47.77

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3.13ct Green Prehnite, Oval, Transparent/Translucent

3.13ct Green Prehnite, Oval, Transparent/Translucent

8.9 x 8.1 mm

$ 9.26

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3.12ctw Green Peridot, Round, VVS-VS

3.12ctw Green Peridot, Round, VVS-VS

5 mm (calibrated)

$ 51.28

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0.55ct Pink Morganite, Pear Shape, VVS-VS

0.55ct Pink Morganite, Pear Shape, VVS-VS

8 x 4.6 mm

$ 33.15

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0.99ct Yellow Beryl, Oval, VVS-VS

0.99ct Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 18.90

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3.82ctw Red Pyrope Garnet, Marquise, VVS-VS

3.82ctw Red Pyrope Garnet, Marquise, VVS-VS

12.1 x 6 mm

$ 33.48

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1.63ct Multicolor Labradorite, Pear Shape, Translucent

1.63ct Multicolor Labradorite, Pear Shape, Translucent

9 x 6 mm (calibrated)

$ 3.60

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2.36ct Purple Rhodolite Garnet, Oval, VVS

2.36ct Purple Rhodolite Garnet, Oval, VVS

8.5 x 7.1 mm

$ 63.27

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4.41ct Pink Rose Quartz, Emerald Cut, Transparent

4.41ct Pink Rose Quartz, Emerald Cut, Transparent

11 x 11 mm (calibrated)

$ 24.16

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15.59ctw Yellow Citrine, Emerald Cut, VVS-VS

15.59ctw Yellow Citrine, Emerald Cut, VVS-VS

14 x 10 mm (calibrated)

$ 98.21

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1.09ct Green Sphene, Oval, Transparent

1.09ct Green Sphene, Oval, Transparent

6.1 x 5.4 mm

$ 5.43

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8.02ct Brown Moonstone, Oval, Translucent

8.02ct Brown Moonstone, Oval, Translucent

15 x 10 mm (calibrated)

$ 17.31

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1.80ctw Orange Sunstone, Oval, Translucent

1.80ctw Orange Sunstone, Oval, Translucent

8 x 6 mm (calibrated)

$ 12.55

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5.25ct Multicolor Labradorite, Marquise, Translucent

5.25ct Multicolor Labradorite, Marquise, Translucent

16 x 8 mm (calibrated)

$ 11.61

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0.75ctw Yellow Citrine, Oval, VS

0.75ctw Yellow Citrine, Oval, VS

6 x 4 mm (calibrated)

$ 4.93

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0.81ct Green Sphene, Oval, Transparent

0.81ct Green Sphene, Oval, Transparent

5.9 x 4.9 mm

$ 4.03

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2.81ctw Yellow Citrine, Oval, VVS-VS

2.81ctw Yellow Citrine, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 15.40

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3.64ct Red Almandine Garnet, Pear Shape, VS

3.64ct Red Almandine Garnet, Pear Shape, VS

11.6 x 9.8 mm

$ 105.74

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0.62ct Green Peridot, Marquise, VS

0.62ct Green Peridot, Marquise, VS

8 x 4 mm (calibrated)

$ 9.26

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5.31ct Pink Morganite, Trillion, Translucent

5.31ct Pink Morganite, Trillion, Translucent

11 x 11 mm (calibrated)

$ 58.17

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2.57ctw Red Pyrope Garnet, Marquise, VVS-VS

2.57ctw Red Pyrope Garnet, Marquise, VVS-VS

10.1 x 5.1 mm

$ 22.53

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0.15ctw White Diamond, Round, VVS-VS

0.15ctw White Diamond, Round, VVS-VS

2.8 mm (calibrated)

$ 268.16

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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

They have a wonderful selection of gems of all sorts, shapes, cuts, and quality. I am very particular about the quality of stones I buy, and found many with VVS clarity and excellent cut and polish. I am thrilled with each of the stones I purchased, and would definitely recommend GemSelect to everyone.

Posted By Debsarabs in February, 2026
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'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

I've purchased from here many times over the last decade+. I find the information easy to understand, helpful, and interesting. I have always been satisfied that I got exactly what I ordered. Pictures and descriptions are clear and unique to each stone.

Posted By Maggie in August, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Ita's a pretty good and simple way to find gems that youa're looking for amazing selection

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