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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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Yellow Untreated Gemstones
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3.37ct Yellow Citrine, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 26.84

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28.56ct Violet Amethyst, Pear Shape, IF

22.9 x 16.6 mm

$ 219.03

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6.51ct Green Prehnite, Fancy, Translucent

15 x 10 mm (calibrated)

$ 10.70

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4.71ct Multicolor Agate, Sphere / Ball, Opaque

8.5 mm

$ 3.75

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2.16ctw Yellow Golden Beryl, Oval, VS

8 x 6 mm (calibrated)

$ 59.16

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87.67ct Multicolor Jasper, Oval, Opaque

38.4 x 31 mm

$ 45.14

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39.37ct Multicolor Tiger'S Eye Matrix, Pear Shape, Opaque

32.9 x 23.3 mm

$ 17.65

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1.00ct Yellow Color-Change Diaspore, Pear Shape, VS-SI

6.4 x 4.8 mm

$ 52.25

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1.97ct Orange Hessonite Garnet, Emerald Cut, VS-SI

8 x 6 mm (calibrated)

$ 32.88

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0.53ct Orange Citrine, Marquise, VVS-VS

8 x 4 mm (calibrated)

$ 3.17

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1.49ct Orange Zircon, Oval, VVS

8.2 x 5.6 mm

$ 36.25

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4.05ct White Rutile Quartz, Sphere / Ball, Translucent

8 mm (calibrated)

$ 3.88

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3.42ctw Yellow Citrine, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 26.23

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18.91ct Green Amazonite, Fancy, Translucent

32.5 x 8.6 mm

$ 10.37

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2.99ct Multicolor Labradorite, Baguette, Translucent

9.4 x 7.1 mm

$ 4.12

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1.27ct Purple Spinel, Cushion, VS

6.8 x 5.8 mm

$ 100.19

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0.70ct Yellow Beryl, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 13.36

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3.47ctw Green Tsavorite Garnet, Pear Shape, VS

5 x 3 mm (calibrated)

$ 190.09

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1.89ct Red Strawberry Quartz, Oval, Transparent

9 x 7 mm (calibrated)

$ 14.59

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4.03ctw Violet Amethyst, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 22.08

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0.43ct Green Peridot, Marquise, VVS-VS

8 x 4 mm (calibrated)

$ 6.42

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1.87ct Green Tourmaline, Oval, VVS-VS

8.7 x 7.8 mm

$ 217.29

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1.32ct Green Peridot, Oval, VS

8 x 6 mm (calibrated)

$ 20.25

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23.22ct White Howlite, Oval, Opaque

26.3 x 17.9 mm

$ 11.11

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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

Loved the price and the quality and the certification options which is the main reason why I buy. The guarantee is also a great reason to use gem select.

Posted By Sal in July, 2025
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 -> 9 star ratings

They have literally everything on this website! The prices are also pretty good, I was able to find plenty of nice stones that I could afford!

Posted By JC in March, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

It was great!

Posted By Annie in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

The citrine gems are beautiful. I appreciated that each stone was individually shown on the website so I could see exactly what I was getting. No mystery person selecting random stones for me. The documentation included with each gem was high quality as well. Great price and arrived as expected.

Posted By Jen in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Love beauty, color, quality, and price of these gems. Personal projects and will come here soon and everytime.

Posted By Darkstar in June, 2025
Source: Bizrate
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