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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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Untreated Gemstones Treatment

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Multicolor Untreated Gemstones
Orange Untreated Gemstones
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Yellow Untreated Gemstones
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23.21ct Green Jadeite, Oval, Translucent

25.5 x 21 mm

$ 50.85

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2.08ct Orange Hessonite Garnet, Cushion, VS

7 x 7 mm (calibrated)

$ 33.71

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6.25ct Turquoise Tourmaline, Flower Cut, Transparent

14.1 x 13.1 mm

$ 101.52

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1.75ct Blue Cavansite, Fancy, Opaque

10 x 8 mm (calibrated)

$ 10.17

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4.81ct Violet Amethyst, Pear Shape, VS

14 x 10 mm (calibrated)

$ 34.94

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6.48ct Red Pyrope Garnet, Oval, VVS-VS

13.4 x 10.3 mm

$ 77.45

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3.16ct Pink Kunzite, Fancy, VS

9.6 x 7.4 mm

$ 86.96

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0.91ctw Red Pyrope Garnet, Square, VS

4 x 4 mm (calibrated)

$ 6.98

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4.83ct Pink Rose Quartz, Emerald Cut, Transparent

11 x 11 mm (calibrated)

$ 26.46

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72.89ctw Multicolor Rhodochrosite, Sphere / Ball, Opaque

15.6 mm

$ 159.72

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4.89ct Multicolor Fire Agate, Pear Shape, Opaque

12.9 x 10.2 mm

$ 42.54

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10.81ctw Multicolor Labradorite, Pear Shape, Translucent

16 x 12 mm (calibrated)

$ 23.69

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3.86ct Pink Morganite, Oval, Transparent

12 x 9.1 mm

$ 42.29

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7.05ctw Pink Morganite, Round, Translucent

10 mm (calibrated)

$ 77.24

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0.76ct Yellow Color-Change Diaspore, Pear Shape, VVS-VS

8.5 x 4 mm

$ 26.64

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5.78ct Multicolor Coral, Oval, Translucent

16 x 12 mm (calibrated)

$ 12.67

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5.95ct Yellow Apatite, Oval, VS

13 x 11 mm (calibrated)

$ 319.03

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1.26ct Green Peridot, Cushion, VVS-VS

8 x 6 mm (calibrated)

$ 20.71

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26.98ct Blue Turquoise, Oval, Opaque

24.5 x 16.1 mm

$ 80.62

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1.49ctw Yellow Citrine, Heart, VVS

6 x 6 mm (calibrated)

$ 11.87

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1.60ct Red Tourmaline, Oval, Transparent

9 x 7 mm (calibrated)

$ 27.43

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1.67ct Orange Hessonite Garnet, Cushion, VS-SI

8 x 6 mm (calibrated)

$ 28.08

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1.61ctw Multicolor Opal, Oval, Transparent

8 x 6 mm (calibrated)

$ 400.89

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5.07ctw White Topaz, Square, VVS-VS

4 x 4 mm (calibrated)

$ 40.83

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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

It was great!

Posted By Annie in September, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Easy to use. Many options to find the right gemstone

Posted By Liz in May, 2026
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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

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 -> 10 star ratings

I could see the actual gem I was buying

Posted By Bugs in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

The website has a good selection, the interface is very intuitive.

Posted By PhoenixFeatherJewelry in January, 2026
Source: Bizrate
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