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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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2.11ctw Red Pyrope Garnet, Emerald Cut, VS

2.11ctw Red Pyrope Garnet, Emerald Cut, VS

5.7 x 3.8 mm

$ 16.19

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2.83ctw Violet Amethyst, Heart, VVS-VS

2.83ctw Violet Amethyst, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 19.73

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4.89ct Brown Mother Of Pearl, Fancy, Opaque

4.89ct Brown Mother Of Pearl, Fancy, Opaque

20.5 x 13 mm

$ 8.88

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10.34ct Multicolor Coral, Oval, Translucent

10.34ct Multicolor Coral, Oval, Translucent

18 x 13 mm (calibrated)

$ 22.66

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2.03ctw Yellow Citrine, Round, VS

2.03ctw Yellow Citrine, Round, VS

7 mm (calibrated)

$ 13.48

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1.72ct Yellow Citrine, Trillion, VVS-VS

1.72ct Yellow Citrine, Trillion, VVS-VS

8.6 x 8.5 mm

$ 10.65

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29.70ct Brown Moonstone, Oval, Opaque

29.70ct Brown Moonstone, Oval, Opaque

22 x 16.2 mm

$ 48.81

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0.90ct Yellow Citrine, Emerald Cut, VS

0.90ct Yellow Citrine, Emerald Cut, VS

7.6 x 5.7 mm

$ 7.17

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20.44ctw Multicolor Labradorite, Oval, Translucent

20.44ctw Multicolor Labradorite, Oval, Translucent

20 x 13.1 mm

$ 44.79

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0.71ct Purple Spinel, Oval, VS

0.71ct Purple Spinel, Oval, VS

6.5 x 4.9 mm

$ 58.93

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2.29ctw Orange Spessartite Garnet, Round, VS

2.29ctw Orange Spessartite Garnet, Round, VS

4.5 mm (calibrated)

$ 77.78

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18.77ct Gray Hematite, Marquise, Opaque

18.77ct Gray Hematite, Marquise, Opaque

24.3 x 11.6 mm

$ 18.31

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4.30ct Multicolor Ruby In Fuchsite, Marquise, Translucent

4.30ct Multicolor Ruby In Fuchsite, Marquise, Translucent

17.1 x 8.9 mm

$ 31.76

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39.72ct Green Moss Agate, Baguette, Translucent

39.72ct Green Moss Agate, Baguette, Translucent

30.7 x 20.3 mm

$ 31.66

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3.62ct Multicolor Fire Agate, Fancy, Opaque

3.62ct Multicolor Fire Agate, Fancy, Opaque

12 x 6.8 mm

$ 27.84

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12.25ct Multicolor Agate, Oval, Opaque

12.25ct Multicolor Agate, Oval, Opaque

16.9 x 14.5 mm

$ 20.75

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0.41ct Orange Sphalerite, Trillion, SI-I1

0.41ct Orange Sphalerite, Trillion, SI-I1

4.7 x 4.6 mm

$ 20.42

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1.34ct Green Tourmaline, Emerald Cut, VVS-VS

1.34ct Green Tourmaline, Emerald Cut, VVS-VS

23.1 x 2.7 mm

$ 28.59

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0.12ct Black Diamond, Square, Opaque

0.12ct Black Diamond, Square, Opaque

2.7 x 2.6 mm

$ 49.80

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2.36ct Brown Tourmaline, Pear Shape, VVS
Tourmaline Product Video (388139)

2.36ct Brown Tourmaline, Pear Shape, VVS

12.3 x 7.4 mm

$ 98.84

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4.61ct Multicolor Fire Agate, Fancy, Opaque

4.61ct Multicolor Fire Agate, Fancy, Opaque

10.5 x 8.7 mm

$ 36.16

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4.44ct Red Rhodolite Garnet, Heart, VS
Rhodolite Garnet Product Video (746077)

4.44ct Red Rhodolite Garnet, Heart, VS

10.5 x 9.5 mm

$ 184.26

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6.05ctw Multicolor Opal, Square, Transparent

6.05ctw Multicolor Opal, Square, Transparent

4.5 x 4.4 mm

$ 42.94

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1.62ct Yellow Citrine, Pear Shape, VVS-VS

1.62ct Yellow Citrine, Pear Shape, VVS-VS

10 x 7 mm (calibrated)

$ 10.17

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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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Great website, easy to navigate, and loads quickly. Have bought here before, very pleased!

Posted By SallyO in February, 2026
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Overall Rating -> 10 star ratings

The site provided lots of detail, factual data, and good photos. I also like the availability of searching by price range as well as by the type of stone.

Posted By SLIntuitive Donna in July, 2025
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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
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Over pretty well experience the your website no complaints about it very easy reliable service provided

Posted By Blas in January, 2026
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Overall Rating -> 10 star ratings

Absolutely love the website, selection and products. Can you guys add a gemstones with inclusions tab. I like those it'd be nice to have them all in one place but i do understand it would be alot of work to go through and categorize them. Thank you anyways

Posted By The homie edgar in December, 2025
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Overall Rating -> 10 star ratings

overall great

Posted By SR in April, 2026
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