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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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1.47ct Pink Tourmaline, Oval, Transparent

1.47ct Pink Tourmaline, Oval, Transparent

7.3 x 5.9 mm

$ 30.50

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12.39ctw Multicolor Labradorite, Baguette, Translucent

12.39ctw Multicolor Labradorite, Baguette, Translucent

11 x 9 mm (calibrated)

$ 15.89

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2.15ct Red Almandine Garnet, Oval, VVS-VS

2.15ct Red Almandine Garnet, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 80.30

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8.17ctw Brown Tiger'S Eye, Oval, Opaque

8.17ctw Brown Tiger'S Eye, Oval, Opaque

12 x 8 mm (calibrated)

$ 12.21

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3.52ct Yellow Citrine, Oval, VVS-VS

3.52ct Yellow Citrine, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 24.54

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2.54ct Violet Amethyst, Trillion, VS

2.54ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 20.24

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1.16ct Multicolor Opal, Oval, Transparent

1.16ct Multicolor Opal, Oval, Transparent

10 x 7 mm (calibrated)

$ 28.88

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1.68ctw Green Peridot, Oval, VVS-VS

1.68ctw Green Peridot, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 23.42

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9.18ct Yellow Citrine, Oval, VVS

9.18ct Yellow Citrine, Oval, VVS

16.3 x 9.5 mm

$ 70.41

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1.61ct Orange Zircon, Round, VVS-VS

1.61ct Orange Zircon, Round, VVS-VS

6.5 mm (calibrated)

$ 35.28

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2.10ct White Rainbow Moonstone, Oval, Transparent

2.10ct White Rainbow Moonstone, Oval, Transparent

9 x 7 mm (calibrated)

$ 35.75

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9.65ct Pink Morganite, Pear Shape, Transparent

9.65ct Pink Morganite, Pear Shape, Transparent

18.2 x 12.1 mm

$ 105.73

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1.26ct Yellow Citrine, Emerald Cut, VVS-VS

1.26ct Yellow Citrine, Emerald Cut, VVS-VS

7.7 x 5.7 mm

$ 10.04

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8.16ct Pink Rose Quartz, Emerald Cut, Transparent

8.16ct Pink Rose Quartz, Emerald Cut, Transparent

12 x 12 mm (calibrated)

$ 44.70

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0.54ct Orange Citrine, Marquise, VVS-VS

0.54ct Orange Citrine, Marquise, VVS-VS

8 x 4 mm (calibrated)

$ 3.77

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0.76ct Green Peridot, Oval, VS

0.76ct Green Peridot, Oval, VS

7 x 5 mm (calibrated)

$ 5.30

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1.40ct Green Tourmaline, Oval, VVS-VS
Tourmaline Product Video (747780)

1.40ct Green Tourmaline, Oval, VVS-VS

6.8 x 6 mm

$ 162.68

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39.26ct Brown Tiger'S Eye Matrix, Pear Shape, Opaque

39.26ct Brown Tiger'S Eye Matrix, Pear Shape, Opaque

37 x 20.5 mm

$ 39.10

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23.25ct Violet Charoite, Cushion, Opaque

23.25ct Violet Charoite, Cushion, Opaque

20.8 x 20.6 mm

$ 38.45

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1.56ct Orange Hessonite Garnet, Oval, VS

1.56ct Orange Hessonite Garnet, Oval, VS

7.9 x 6.3 mm

$ 29.52

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0.45ct Orange Sphalerite, Round, SI

0.45ct Orange Sphalerite, Round, SI

4.5 mm (calibrated)

$ 22.41

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4.24ct Violet Amethyst, Pear Shape, VVS

4.24ct Violet Amethyst, Pear Shape, VVS

14 x 10 mm (calibrated)

$ 27.87

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23.63ct Pink Rose Quartz, Oval, Transparent/Translucent

23.63ct Pink Rose Quartz, Oval, Transparent/Translucent

19.2 x 15.8 mm

$ 33.66

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4.53ct White Dendritic Agate, Pear Shape, Opaque

4.53ct White Dendritic Agate, Pear Shape, Opaque

13 x 9 mm (calibrated)

$ 3.60

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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

Took a chance on purchasing my gemstones from Gemselect and was impressed. 10/10

Posted By KT in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Absolutely love Gem Select. I always know the quality and accuracy of information and photos are top notch. Highly recommend!

Posted By Matthew K. in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

A pleasant experience and many choices to choose from

Posted By Krackenking in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

The stones are very nice.

Posted By Mvk in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Filters need to be improved but rest of website is great

Posted By Rock hound in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I could see the actual gem I was buying

Posted By Bugs in December, 2025
Source: Bizrate
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