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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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0.67ct Pink Spinel, Cushion, VS

0.67ct Pink Spinel, Cushion, VS

5.7 x 4.4 mm

$ 38.93

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1.30ct Purple Rhodolite Garnet, Oval, VS

1.30ct Purple Rhodolite Garnet, Oval, VS

7.3 x 5.9 mm

$ 45.32

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7.29ct Violet Amethyst, Pear Shape, VVS-VS

7.29ct Violet Amethyst, Pear Shape, VVS-VS

16 x 12 mm (calibrated)

$ 55.91

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2.99ct Violet Amethyst, Trillion, VS

2.99ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 22.41

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1.60ct Pink Tourmaline, Emerald Cut, VVS

1.60ct Pink Tourmaline, Emerald Cut, VVS

11.2 x 4.5 mm

$ 105.18

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0.55ct Yellow Color-Change Diaspore, Pear Shape, VVS-VS

0.55ct Yellow Color-Change Diaspore, Pear Shape, VVS-VS

7.7 x 4.1 mm

$ 29.03

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0.66ct Yellow Zircon, Oval, VVS-VS

0.66ct Yellow Zircon, Oval, VVS-VS

5.2 x 4.2 mm

$ 9.86

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3.69ct Orange Sunstone, Oval, Translucent

3.69ct Orange Sunstone, Oval, Translucent

12 x 10 mm (calibrated)

$ 21.95

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3.11ct Blue Chalcedony, Oval, Transparent

3.11ct Blue Chalcedony, Oval, Transparent

11 x 9 mm (calibrated)

$ 6.19

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25.35ctw Multicolor Labradorite, Oval, Translucent

25.35ctw Multicolor Labradorite, Oval, Translucent

25 x 18 mm (calibrated)

$ 50.50

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2.85ct Yellow Citrine, Oval, VVS-VS

2.85ct Yellow Citrine, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 15.62

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7.76ct Yellow Apatite, Oval, VS
Apatite Product Video (447312)

7.76ct Yellow Apatite, Oval, VS

15.1 x 11.9 mm

$ 192.92

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6.83ct Violet Amethyst, Pear Shape, VVS-VS

6.83ct Violet Amethyst, Pear Shape, VVS-VS

16 x 12 mm (calibrated)

$ 52.38

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1.86ct Orange Hessonite Garnet, Emerald Cut, VS

1.86ct Orange Hessonite Garnet, Emerald Cut, VS

7 x 7 mm (calibrated)

$ 36.69

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1.06ct Orange Moonstone, Pear Shape, Translucent

1.06ct Orange Moonstone, Pear Shape, Translucent

9 x 6 mm (calibrated)

$ 2.12

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5.01ctw Red Pyrope Garnet, Square, VS

5.01ctw Red Pyrope Garnet, Square, VS

4.2 x 4 mm

$ 38.43

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1.43ctw Red Pyrope Garnet, Square, VVS-VS

1.43ctw Red Pyrope Garnet, Square, VVS-VS

5 x 5 mm (calibrated)

$ 10.96

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0.24ct Violet Iolite, Pear Shape, VVS-VS

0.24ct Violet Iolite, Pear Shape, VVS-VS

4.3 x 4.2 mm

$ 9.56

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1.34ct Brown Color-Change Garnet, Oval, VS

1.34ct Brown Color-Change Garnet, Oval, VS

7.3 x 5.3 mm

$ 107.05

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11.36ct Brown Tiger'S Eye, Fancy, Opaque

11.36ct Brown Tiger'S Eye, Fancy, Opaque

16 x 16 mm (calibrated)

$ 14.93

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5.61ct Violet Amethyst, Round, Transparent

5.61ct Violet Amethyst, Round, Transparent

11 mm (calibrated)

$ 27.94

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1.84ct Violet Amethyst, Square, VVS-VS

1.84ct Violet Amethyst, Square, VVS-VS

7 x 7 mm (calibrated)

$ 14.66

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3.89ct Yellow Rutile Quartz, Oval, Transparent

3.89ct Yellow Rutile Quartz, Oval, Transparent

12 x 8 mm (calibrated)

$ 10.65

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4.79ctw White Moonstone, Oval, Translucent

4.79ctw White Moonstone, Oval, Translucent

10 x 8 mm (calibrated)

$ 52.48

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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

I feel Gemselect is a trustworthy company to buy from

Posted By Becky in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

It was easy to navigate

Posted By GemGod in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

this site is awesome. I was able to look at the products think about purchasing and come back and find the same products. With the amount of inventory gem select has. Its awesome to be able to filter the way that they allow you too.

Posted By Tommyp in November, 2025
Source: Bizrate

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
Source: Bizrate

Overall Rating -> 9 star ratings

The purchasing process is fairly quick and straightforward and for me user friendly so it probably took more or less than 3 minutes to purchase and pay for the items. I wish there was a discount offer for multiple items to encourage us buyers to purchase more an incentive and add more sales in your end. Besides that, it's been a great purchasing experience and will continue to shop as I am a repeat customer and have bought from your store many times before. Thank you.

Posted By Emmanuel in October, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

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

Posted By Jim in January, 2026
Source: Bizrate
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