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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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Yellow Untreated Gemstones
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4.13ct White Topaz, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 31.67

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3.21ct White Moonstone, Oval, Translucent

10 x 8 mm (calibrated)

$ 8.78

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1.83ct Blue Cavansite, Fancy, Opaque

9.7 x 7.5 mm

$ 10.63

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11.91ct Violet Amethyst, Flower Cut, Translucent

15 x 15 mm (calibrated)

$ 39.14

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9.38ctw Multicolor Pietersite, Oval, Opaque

14 x 10 mm (calibrated)

$ 41.10

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3.02ct Violet Amethyst, Trillion, VVS-VS

10 x 10 mm (calibrated)

$ 24.06

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8.59ct Multicolor Agate, Oval, Opaque

14 x 12 mm (calibrated)

$ 14.54

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0.77ct Green Peridot, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 10.74

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0.81ctw Green Peridot, Pear Shape, VVS-VS

6 x 4 mm (calibrated)

$ 7.10

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3.24ctw Orange Sunstone, Oval, Translucent

7 x 5 mm (calibrated)

$ 24.85

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6.91ct Multicolor Boulder Opal, Fancy, Opaque

19.3 x 10.7 mm

$ 28.68

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29.35ct Black Feather Pyrite, Oval, Opaque

28 x 20 mm

$ 22.90

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1.88ct Orange Moonstone, Cushion, Opaque

7 x 7 mm (calibrated)

$ 3.74

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1.82ct Green Sphene, Oval, Transparent

9 x 6 mm (calibrated)

$ 9.06

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22.68ct Multicolor Labradorite, Pear Shape, Opaque

30 x 20 mm

$ 20.33

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0.96ct Yellow Beryl, Trillion, VS

7 x 7 mm (calibrated)

$ 22.95

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0.72ct Red Pyrope Garnet, Pear Shape, VVS

7 x 5 mm (calibrated)

$ 5.74

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0.76ct Orange Fire Opal, Oval, Translucent

8 x 6 mm (calibrated)

$ 17.35

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6.30ct Yellow Citrine, Oval, VVS

15.1 x 10.7 mm

$ 38.16

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1.48ct Orange Zircon, Round, VVS-VS

6.5 mm (calibrated)

$ 35.30

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9.00ct Multicolor Rainbow Pyrite, Heart, Opaque

16.7 x 15.6 mm

$ 23.31

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2.93ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 20.43

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2.76ctw Purple Rhodolite Garnet, Trillion, VS

5 x 5 mm (calibrated)

$ 24.19

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0.77ct Orange Fire Opal, Oval, Translucent

8 x 6 mm (calibrated)

$ 17.58

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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

Navigating the site was very easy and the photos of the exact gem you would be purchasing was well done.

Posted By HVeeder in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

overall great

Posted By SR in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Absolutely love Gem Select. I always know the quality and accuracy of information and photos are top notch. Highly recommend!

Posted By Matthew K. in May, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Always a good quality stone. Priced fairly and shipped promptly. Answers emails quickly

Posted By Ron T in November, 2025
Source: Bizrate

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 -> 10 star ratings

Great selection of gems at a reasonable price

Posted By Curt in July, 2025
Source: Bizrate
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