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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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1.26ctw Yellow Beryl, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 25.10

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7.57ct Multicolor Amethyst Geode Slice, Fancy, Transparent

18.3 x 14.1 mm

$ 8.07

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7.55ctw Violet Amethyst, Oval, Transparent

11 x 9 mm (calibrated)

$ 41.37

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24.76ct Green Serpentine, Oval, Translucent

30.6 x 17.2 mm

$ 53.02

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1.84ct Yellow Zircon, Round, VVS-VS

7 mm (calibrated)

$ 43.68

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24.46ct White Rainbow Moonstone, Oval, Translucent

26.8 x 16 mm

$ 24.36

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63.07ct Multicolor Jasper, Oval, Opaque

43.9 x 27.9 mm

$ 36.44

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2.19ctw Purple Rhodolite Garnet, Oval, VS

5.1 x 4.1 mm

$ 23.69

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2.60ct Yellow Citrine, Oval, Transparent

10 x 8 mm (calibrated)

$ 19.94

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28.51ct Green Serpentine, Oval, Translucent

31.5 x 18.9 mm

$ 61.05

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0.89ctw Green Peridot, Pear Shape, VVS-VS

6 x 4 mm (calibrated)

$ 7.80

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7.08ctw Green Prehnite, Round, Transparent/Translucent

8 mm (calibrated)

$ 38.79

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0.90ct Yellow Citrine, Oval, Transparent

10.1 x 4.1 mm

$ 6.27

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7.71ct Multicolor Cinnabar, Oval, Opaque

19.6 x 13.6 mm

$ 9.02

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8.55ct Multicolor Fire Agate, Fancy, Opaque

24.6 x 8.4 mm

$ 64.26

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0.41ct Yellow Citrine, Cushion, VVS-VS

5 x 5 mm (calibrated)

$ 2.86

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2.55ct White Rainbow Moonstone, Emerald Cut, VVS

8.4 x 7.1 mm

$ 266.21

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1.17ct Pink Morganite, Pear Shape, VVS

9 x 7 mm (calibrated)

$ 51.28

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1.57ct Orange Hessonite Garnet, Cushion, VVS-VS

7 x 7 mm (calibrated)

$ 23.99

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3.73ctw Violet Amethyst, Oval, VS

7.1 x 5.2 mm

$ 20.43

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34.30ct Multicolor Tiger'S Eye Matrix, Oval, Opaque

32.8 x 19.1 mm

$ 15.72

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1.36ct Red Tourmaline, Oval, Transparent

7.3 x 5.7 mm

$ 54.18

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4.15ct Red Rhodolite Garnet, Heart, VVS-VS

11 x 9 mm (calibrated)

$ 172.23

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6.74ct Violet Amethyst, Oval, Transparent

13.8 x 11.4 mm

$ 40.28

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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!

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It's always a pleasure doing business with Gem Select. Outstanding products ant very reasonable prices. Thank You One and All.

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Posted By VH-1 in July, 2025
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Very food

Posted By Keeto in July, 2025
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I liked the selection of gems, and price. I did not like your PayPal process. I already have a PP account and you want me to sign up for another.

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