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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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10.07ct Multicolor Agate, Oval, Opaque

14 x 12 mm (calibrated)

$ 17.05

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15.61ctw Multicolor Jasper, Fancy, Opaque

20.4 x 11.3 mm

$ 8.86

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1.46ct Multicolor Labradorite, Round, Translucent

7 mm (calibrated)

$ 3.54

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1.35ct Orange Hessonite Garnet, Emerald Cut, VS

7.7 x 5.3 mm

$ 22.70

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1.11ctw Green Peridot, Oval, Transparent

6 x 4 mm (calibrated)

$ 19.90

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1.83ct Pink Strawberry Quartz, Oval, Translucent

8 x 6 mm (calibrated)

$ 9.13

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1.16ct Green Peridot, Oval, VS

8 x 6 mm (calibrated)

$ 17.33

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2.04ct Yellow Beryl, Oval, VS

10 x 8 mm (calibrated)

$ 50.80

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6.67ct Violet Charoite, Pear Shape, Opaque

18.8 x 9.3 mm

$ 18.99

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3.45ctw White Rainbow Moonstone, Square, Transparent

3.2 x 3.2 mm

$ 49.53

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3.86ctw White Topaz, Square, VVS-VS

4 x 4 mm (calibrated)

$ 31.08

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22.87ct Gray Hematite, Heart, Opaque

20.4 x 19.1 mm

$ 50.11

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3.36ct Violet Amethyst, Round, VVS

10 mm (calibrated)

$ 25.76

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1.91ctw Orange Sunstone, Oval, Translucent

8 x 6 mm (calibrated)

$ 13.31

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2.36ctw Green Tsavorite Garnet, Square, VVS-VS

2.2 x 2.2 mm

$ 219.78

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0.71ct Orange Hessonite Garnet, Pear Shape, SI

6.6 x 4.7 mm

$ 15.55

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1.21ct Purple Rhodolite Garnet, Oval, VS

7 x 5 mm (calibrated)

$ 32.14

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4.19ct Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 25.16

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2.20ctw White Sillimanite Cat'S Eye, Oval, Transparent

7 x 5 mm (calibrated)

$ 6.61

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1.69ctw Red Pyrope Garnet, Square, VVS-VS

5 x 5 mm (calibrated)

$ 12.96

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7.04ct Pink Rose Quartz, Emerald Cut, Transparent

12 x 12 mm (calibrated)

$ 38.56

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2.99ctw Violet Amethyst, Trillion, VS

6.8 x 5.9 mm

$ 19.65

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5.30ct Yellow Citrine, Oval, VVS

14 x 10 mm (calibrated)

$ 31.81

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43.06ct Orange Druzy Citrine, Fancy, Opaque

33.3 x 25.4 mm

$ 48.80

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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

good navigation and simple interface.

Posted By Dave in April, 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 -> 10 star ratings

I was able to find what I wanted very easily!

Posted By Lenny in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Great! Affordable

Posted By Spinellope in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Good selection, using for custom jewlery for my wife.

Posted By Smitty in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

So far So good

Posted By VH-1 in July, 2025
Source: Bizrate
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