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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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3.07ctw White Topaz, Cushion, VVS-VS

4.6 x 4.6 mm

$ 16.82

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0.48ct Pink Morganite, Round, VS-SI

5.5 mm (calibrated)

$ 19.92

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18.49ct Blue Chalcedony, Marquise, Opaque

32 x 15.2 mm

$ 38.37

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1.39ctw Yellow Citrine, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 9.69

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3.76ctw Red Pyrope Garnet, Heart, VS

8 x 8 mm (calibrated)

$ 32.96

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0.27ct Violet Iolite, Baguette, VS

5 x 3 mm (calibrated)

$ 10.76

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6.42ct Multicolor Fire Agate, Fancy, Opaque

17 x 7.8 mm

$ 49.81

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2.25ctw Orange Sunstone, Round, Translucent

7 mm (calibrated)

$ 34.51

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10.82ctw Multicolor Labradorite, Pear Shape, Translucent

18 x 13 mm (calibrated)

$ 23.92

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1.37ct Green Sphene, Oval, Transparent

7.1 x 5.8 mm

$ 6.82

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7.17ctw Multicolor Labradorite, Round, Translucent

9 mm (calibrated)

$ 17.42

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6.82ct Green Amazonite, Marquise, Opaque

20.2 x 10.1 mm

$ 14.88

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0.04ct Black Diamond, Round, Opaque

1.9 mm (calibrated)

$ 31.87

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8.74ct Multicolor Rainbow Pyrite, Pear Shape, Opaque

23 x 10.5 mm

$ 26.11

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28.99ct Pink Rose Quartz, Oval, Transparent

20 x 15 mm (calibrated)

$ 38.11

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1.37ct Red Rhodolite Garnet, Oval, VS-SI

7.1 x 5.4 mm

$ 36.39

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36.40ct Black Feather Pyrite, Cushion, Opaque

23.8 x 23 mm

$ 28.40

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1.14ct Yellow Color-Change Diaspore, Cushion, VVS

9.6 x 4.2 mm

$ 39.97

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4.49ctw White Topaz, Cushion, VVS-VS

4.5 x 4.5 mm

$ 24.60

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2.31ctw Yellow Sphene, Oval, Transparent

7.1 x 5.8 mm

$ 11.50

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1.14ct Multicolor Opal, Oval, Translucent

9 x 7 mm (calibrated)

$ 28.39

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17.27ct Black Nuummite, Cushion, Opaque

17.5 x 13.9 mm

$ 68.28

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9.34ct Blue Larimar, Pear Shape, Opaque

24.2 x 12.6 mm

$ 111.64

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6.26ct Yellow Citrine, Emerald Cut, VVS-VS

14 x 10 mm (calibrated)

$ 48.01

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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

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

Overall Rating -> 10 star ratings

I love the ability to choose from many options of shapes, gemstone type, color, and so forth. It is fun!

Posted By Geof in November, 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

Will know more once order received

Posted By Jim in September, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

I visited several online loose stone shops trying to find rare stones. I finally found one that I've been looking for here, and very satisfied. Looking forward to receive the item in 3 weeks.

Posted By Atsu in December, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

I think therea's no problem

Posted By Napoleon in August, 2025
Source: Bizrate
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