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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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7.48ctw Orange Rutile Quartz, Round, Transparent

10 mm (calibrated)

$ 22.13

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1.15ct Pink Strawberry Quartz, Oval, Translucent

7 x 5 mm (calibrated)

$ 5.74

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0.26ctw Green Kornerupine, Oval, VS

3.6 x 2.7 mm

$ 14.24

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19.66ct Gray Hematite, Square, Opaque

16.7 x 16.4 mm

$ 19.17

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0.73ct Orange Citrine, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 7.27

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11.69ct Green Druzy Variscite, Fancy, Opaque

27.5 x 16.2 mm

$ 11.99

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7.16ct Green Jadeite, Marquise, Translucent

22.1 x 10.3 mm

$ 15.69

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0.60ct Yellow Color-Change Diaspore, Round, VVS-VS

5.3 mm

$ 21.06

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3.88ct Violet Amethyst, Pear Shape, VVS

14 x 10 mm (calibrated)

$ 28.18

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23.60ct Purple Ruby-Zoisite, Flower Cut, Opaque

18 x 17 mm

$ 28.68

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3.31ct Multicolor Pietersite, Oval, Opaque

12 x 8 mm (calibrated)

$ 8.01

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2.28ct Orange Moonstone, Cushion, Translucent

9 x 7 mm (calibrated)

$ 4.54

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0.71ct Green Peridot, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 9.90

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3.37ctw Red Pyrope Garnet, Square, VS

4.2 x 4.1 mm

$ 25.85

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3.40ct Yellow Citrine, Oval, VS

11 x 9 mm (calibrated)

$ 18.63

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6.95ct Black Nuummite, Oval, Opaque

13.4 x 11.6 mm

$ 30.67

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1.73ctw Green Demantoid Garnet, Oval, VS

4.3 x 3.5 mm

$ 189.54

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50.10ct Multicolor Jasper, Round, Opaque

32 mm

$ 31.29

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13.73ct Green Malachite, Baguette, Opaque

13 x 11 mm (calibrated)

$ 17.86

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11.78ct Multicolor Jasper, Pear Shape, Opaque

25 x 13.4 mm

$ 18.72

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6.66ct Brown Rutile Quartz, Round, Transparent

12 mm (calibrated)

$ 18.24

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5.07ct Green Cat'S Eye Beryl, Oval, Translucent

10.7 x 9.6 mm

$ 885.06

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2.08ct Green Chrysoprase, Oval, Translucent

8.7 x 6.6 mm

$ 17.26

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52.60ct Multicolor Rhodochrosite, Fancy, Translucent

43.8 x 18.9 mm

$ 40.34

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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

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A pleasant experience and many choices to choose from

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Fast snd easy to find what I was looking for

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Overall Rating -> 10 star ratings

I love the products. I've bought them as gifts and people love my gifts

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Overall Rating -> 10 star ratings

It was all good

Posted By Debsarabs in February, 2026
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Overall Rating -> 9 star ratings

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

Posted By Jim in January, 2026
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