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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
Untreated Gemstones Clarity
Untreated Gemstones Price
Untreated Gemstones Treatment

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Bi-color Untreated Gemstones
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Multicolor Untreated Gemstones
Orange Untreated Gemstones
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Yellow Untreated Gemstones
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1.10ct Orange Hessonite Garnet, Round, VVS-VS

1.10ct Orange Hessonite Garnet, Round, VVS-VS

6.5 mm (calibrated)

$ 21.91

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24.14ct Pink Rose Quartz, Oval, Transparent

24.14ct Pink Rose Quartz, Oval, Transparent

22.1 x 18.1 mm

$ 39.43

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4.26ct Multicolor Labradorite, Pear Shape, Translucent

4.26ct Multicolor Labradorite, Pear Shape, Translucent

12 x 8 mm (calibrated)

$ 9.42

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10.25ct Multicolor Quartz With Marcasite, Pear Shape, Transparent

10.25ct Multicolor Quartz With Marcasite, Pear Shape, Transparent

18 x 13 mm (calibrated)

$ 67.38

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11.89ct Green Opal, Oval, Opaque

11.89ct Green Opal, Oval, Opaque

17 x 14.1 mm

$ 25.46

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2.27ctw Multicolor Andalusite, Oval, VS

2.27ctw Multicolor Andalusite, Oval, VS

6 x 4 mm (calibrated)

$ 121.71

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46.00ct Violet Amethyst, Pear Shape, VVS
Amethyst Product Video (734687)

46.00ct Violet Amethyst, Pear Shape, VVS

32.8 x 22.6 mm

$ 366.53

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0.71ct Green Tourmaline, Oval, VVS

0.71ct Green Tourmaline, Oval, VVS

7.1 x 5.3 mm

$ 35.36

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5.53ct Yellow Citrine, Oval, VVS

5.53ct Yellow Citrine, Oval, VVS

14.3 x 10.3 mm

$ 33.51

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1.18ct Red Rhodolite Garnet, Emerald Cut, VVS-VS
Rhodolite Garnet Product Video (754796)

1.18ct Red Rhodolite Garnet, Emerald Cut, VVS-VS

5.6 x 5.2 mm

$ 44.07

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7.32ctw White Topaz, Square, VVS-VS

7.32ctw White Topaz, Square, VVS-VS

5 x 5 mm (calibrated)

$ 53.22

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1.00ctw Orange Spessartite Garnet, Oval, VS

1.00ctw Orange Spessartite Garnet, Oval, VS

5 x 4.1 mm

$ 34.86

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0.44ct Orange Sphalerite, Round, SI-I1

0.44ct Orange Sphalerite, Round, SI-I1

4.7 mm

$ 21.91

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3.92ctw Brown Smoky Quartz, Round, VVS-VS

3.92ctw Brown Smoky Quartz, Round, VVS-VS

8 mm (calibrated)

$ 6.44

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1.11ct Purple Spinel, Cushion, VVS-VS

1.11ct Purple Spinel, Cushion, VVS-VS

6.3 x 6.1 mm

$ 72.97

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0.80ct Blue Kyanite, Round, VS

0.80ct Blue Kyanite, Round, VS

5 mm (calibrated)

$ 13.28

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1.07ct White Sillimanite Cat'S Eye, Oval, Transparent

1.07ct White Sillimanite Cat'S Eye, Oval, Transparent

6.5 x 4.8 mm

$ 4.12

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1.72ct Yellow Citrine, Trillion, Transparent

1.72ct Yellow Citrine, Trillion, Transparent

8 x 8 mm (calibrated)

$ 13.19

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1.85ct Pink Strawberry Quartz, Round, Translucent

1.85ct Pink Strawberry Quartz, Round, Translucent

8 mm (calibrated)

$ 14.19

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1.00ct Yellow Morganite, Oval, VVS-VS

1.00ct Yellow Morganite, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 43.82

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36.96ct Multicolor Feather Pyrite, Cushion, Opaque

36.96ct Multicolor Feather Pyrite, Cushion, Opaque

30.9 x 18.4 mm

$ 28.83

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1.45ct Violet Amethyst, Marquise, VS

1.45ct Violet Amethyst, Marquise, VS

12 x 6 mm

$ 11.12

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3.07ct Blue Kyanite, Cushion, SI

3.07ct Blue Kyanite, Cushion, SI

11.2 x 7.2 mm

$ 76.44

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1.40ct Purple Sapphire, Cushion, VS
Sapphire Product Video (448495)

1.40ct Purple Sapphire, Cushion, VS

6.7 x 5.2 mm

$ 739.31

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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 -> 8 star ratings

First time using this website. It was both exciting finding things in my price range and things Iam gonna save up for and use in other pieces. I love that the picture of the gem is the exact gem I'll be buying. I haven't tested the gems yes but they said they sold me 100% natural gems.

Posted By Salvo in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

My experience has always been fantastic. Today I saved 6 gems to email a customer looking for a particular color blend to fit into an east west setting, so her options were limited, but we found one she wanted, deleted all the others in the cart and order the gem she selected. It was helpful to be able to put them in the cart so I could save them until she selected the one she wanted without having to research all of them again.

Posted By RJ in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Recomendado Totalmente Los Productos Se Entregaron A Tiempo

Posted By Alexis in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Easy process.

Posted By Crafty Seabee in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Navigating the site was very easy and the photos of the exact gem you would be purchasing was well done.

Posted By HVeeder in February, 2026
Source: Bizrate

Overall Rating -> 7 star ratings

Easy, quick.

Posted By Mich in June, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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