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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
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Yellow Untreated Gemstones
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29.07ct White Jadeite, Fancy, Translucent

29.4 x 16.1 mm

$ 15.64

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0.74ct Blue Kyanite, Round, SI

5.3 mm

$ 18.43

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12.66ct Multicolor Quartz With Marcasite, Marquise, Transparent

23.2 x 13.5 mm

$ 83.22

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0.64ct Green Peridot, Pear Shape, VVS-VS

6.7 x 4.8 mm

$ 4.47

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0.85ct Yellow Morganite, Pear Shape, VS

8 x 6 mm (calibrated)

$ 37.25

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3.40ct Pink Strawberry Quartz, Oval, Transparent

11 x 9 mm (calibrated)

$ 25.50

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1.41ct Yellow Citrine, Emerald Cut, VVS

8 x 6 mm (calibrated)

$ 9.83

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1.42ct Yellow Citrine, Oval, Transparent

10 x 8 mm (calibrated)

$ 10.89

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2.87ct Red Almandine Garnet, Oval, VS

9 x 7 mm (calibrated)

$ 83.37

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2.08ct Pink Strawberry Quartz, Oval, Transparent

9 x 7 mm (calibrated)

$ 10.36

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0.74ctw Blue Kyanite, Round, SI

4.3 mm

$ 18.43

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10.81ct Multicolor Agate, Sphere / Ball, Opaque

11 mm (calibrated)

$ 8.62

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1.59ctw Multicolor Opal, Pear Shape, Transparent

9 x 6 mm (calibrated)

$ 39.59

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53.48ct Violet Amethyst, Pear Shape, IF

27 x 20 mm (calibrated)

$ 351.55

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1.01ct Multicolor Chocolate Opal, Oval, Translucent

9 x 7 mm (calibrated)

$ 30.18

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9.85ct Multicolor Labradorite, Pear Shape, Opaque

18 x 13 mm (calibrated)

$ 21.78

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3.92ctw Red Pyrope Garnet, Square, VS

4 x 4 mm (calibrated)

$ 30.06

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4.48ct Multicolor Pietersite, Pear Shape, Opaque

15.5 x 9 mm

$ 10.57

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1.35ct Green Sphene, Oval, Transparent

7.2 x 6 mm

$ 6.72

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1.63ct Brown Kornerupine, Pear Shape, VS

8.5 x 6.8 mm

$ 135.29

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1.85ct Pink Morganite, Oval, VS

9 x 7 mm (calibrated)

$ 141.88

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1.82ct Orange Hessonite Garnet, Oval, VS-SI

8 x 6.6 mm

$ 32.39

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0.57ct Green Peridot, Emerald Cut, VS

6 x 4 mm (calibrated)

$ 8.52

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13.17ctw Violet Amethyst, Oval, Transparent

14 x 10 mm (calibrated)

$ 72.15

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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

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

Overall Rating -> 9 star ratings

It was fine . Wish there had been more round stones to select from

Posted By Emm in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

It was all good

Posted By Debsarabs in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

It was good. There was a large selection at prices I could afford.

Posted By Zorah in February, 2026
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

Nothing bad to report. Everything is as expected. The gems and the price are all very good.

Posted By Dafanatic in August, 2025
Source: Bizrate
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