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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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3.78ct Turquoise Grandidierite, Oval, Translucent

11.4 x 8.5 mm

$ 828.27

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6.34ct Multicolor Fire Agate, Fancy, Opaque

13 x 10.2 mm

$ 48.75

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9.98ct Multicolor Agate, Oval, Opaque

15.1 x 13.5 mm

$ 9.94

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32.47ctw Multicolor Rhodochrosite, Oval, Translucent

26.2 x 12.3 mm

$ 26.68

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0.70ct Pink Morganite, Pear Shape, VVS-VS

7.4 x 5 mm

$ 42.18

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1.45ct Yellow Citrine, Emerald Cut, VS

8 x 6 mm (calibrated)

$ 9.06

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4.04ctw Orange Moonstone, Trillion, Translucent

8 x 8 mm (calibrated)

$ 8.05

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9.73ct Pink Rose Quartz, Pear Shape, Transparent

20.7 x 14.3 mm

$ 33.90

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8.26ct Green Maw-Sit-Sit, Pear Shape, Opaque

16.4 x 11.2 mm

$ 25.51

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7.54ct Brown Smoky Quartz, Emerald Cut, VVS

12 x 12 mm (calibrated)

$ 14.04

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1.46ctw Red Pyrope Garnet, Square, VVS-VS

5 x 5 mm (calibrated)

$ 11.20

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5.95ct Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 35.72

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11.03ctw Green Prehnite, Fancy, Translucent

16 x 10.3 mm

$ 18.12

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1.59ct Violet Amethyst, Marquise, VS

12 x 6.1 mm

$ 12.19

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18.39ct Green Bloodstone, Oval, Opaque

20.9 x 15.2 mm

$ 27.48

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2.55ct Multicolor Labradorite, Marquise, Translucent

12 x 6 mm (calibrated)

$ 5.64

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4.89ctw Orange Hessonite Garnet, Emerald Cut, VS

6.5 x 4.8 mm

$ 107.15

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4.95ctw Multicolor Tourmaline, Fancy, Transparent

13.2 x 11.6 mm

$ 123.26

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4.87ct White Dendritic Agate, Pear Shape, Opaque

15 x 10 mm (calibrated)

$ 3.88

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27.47ct Gray Obsidian, Oval, Opaque

30.7 x 21 mm

$ 21.67

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1.43ct Pink Tourmaline, Emerald Cut, VVS-VS

6.5 x 6.2 mm

$ 166.17

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2.05ct Green Prehnite, Oval, Transparent/Translucent

8 x 6.8 mm

$ 13.23

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1.69ct Violet Amethyst, Pear Shape, VVS-VS

10 x 7 mm (calibrated)

$ 11.11

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19.45ct White Rainbow Moonstone, Oval, Translucent

23.8 x 12.8 mm

$ 19.37

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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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I had a very easy time navigating the web page and using filters to find what I was looking for. The varied selection was nice to see and pricing is clear and fair.

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All items were delivered on time with all items meeting or exceeding my expectations. Cut, clarity and color were very close to the photos and description.

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Plan on purchasing on an ongoing basis. So far.....so good....

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