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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
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3.05ctw White Topaz, Cushion, VVS-VS

4.6 x 4.5 mm

$ 16.72

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2.31ct Orange Hessonite Garnet, Cushion, VS

7.3 x 7.2 mm

$ 43.03

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1.66ct Green Sphene, Oval, Translucent

7.3 x 6.4 mm

$ 8.27

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1.35ct Yellow Citrine, Emerald Cut, VVS-VS

8 x 6 mm (calibrated)

$ 10.76

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13.39ct Violet Amethyst, Cushion, VVS

18 x 13 mm (calibrated)

$ 106.69

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1.04ct Purple Rhodolite Garnet, Oval, VS-SI

7 x 5 mm (calibrated)

$ 27.62

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6.33ct Turquoise Larimar, Round, Opaque

12 mm (calibrated)

$ 75.08

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5.67ct Green Actinolite Cat'S Eye, Oval, Translucent

13.7 x 11 mm

$ 39.53

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29.10ct Multicolor Jasper, Fancy, Opaque

38.8 x 9.6 mm

$ 8.70

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5.06ct White Dendritic Agate, Pear Shape, Opaque

14 x 10 mm (calibrated)

$ 4.03

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6.59ct Brown Smoky Quartz, Round, VVS-VS

13 mm (calibrated)

$ 10.84

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18.85ctw Multicolor Fossil Coral, Cushion, Opaque

16 x 12 mm (calibrated)

$ 37.17

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3.35ct Multicolor Labradorite, Marquise, Translucent

14 x 7 mm (calibrated)

$ 7.41

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0.91ct Yellow Sphene, Oval, Transparent

6.2 x 5.1 mm

$ 4.53

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4.28ct Red Pyrope Garnet, Pear Shape, VVS

13.2 x 10.5 mm

$ 51.15

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2.51ctw Red Pyrope Garnet, Marquise, VVS-VS

10.1 x 5.1 mm

$ 22.00

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15.11ct Turquoise Larimar, Oval, Opaque

20 x 15 mm (calibrated)

$ 180.43

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23.11ct Green Serpentine, Oval, Translucent

30 x 18.1 mm

$ 49.49

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3.16ct Yellow Citrine, Oval, VVS-VS

12 x 10 mm (calibrated)

$ 24.24

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7.90ct Multicolor Rainbow Pyrite, Marquise, Opaque

22.8 x 8.7 mm

$ 20.46

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2.96ct Yellow Citrine, Oval, VVS-VS

11.4 x 9.5 mm

$ 23.59

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0.77ctw Green Peridot, Pear Shape, VVS-VS

6 x 4 mm (calibrated)

$ 6.76

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1.60ct Yellow Citrine, Square, VVS-VS

7 x 7 mm (calibrated)

$ 10.52

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0.60ct Orange Zircon, Oval, VVS-VS

5.3 x 4.1 mm

$ 14.94

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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

I feel Gemselect is a trustworthy company to buy from

Posted By Becky in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Found a beautiful opal at a great price. I was not disappointed when it arrived. Even better in person.

Posted By Fried Rice in August, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

It was fine

Posted By Na 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 -> 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
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