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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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1.67ctw Brown Tourmaline, Oval, VS

1.67ctw Brown Tourmaline, Oval, VS

8 x 5 mm (calibrated)

$ 83.02

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3.92ctw Orange Sunstone, Oval, Translucent

3.92ctw Orange Sunstone, Oval, Translucent

6 x 4 mm (calibrated)

$ 30.06

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3.82ct Multicolor Pietersite, Pear Shape, Opaque

3.82ct Multicolor Pietersite, Pear Shape, Opaque

14.7 x 9.3 mm

$ 9.01

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2.40ct Purple Rhodolite Garnet, Oval, VVS-VS
Rhodolite Garnet Product Video (735193)

2.40ct Purple Rhodolite Garnet, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 95.62

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0.61ct Multicolor Opal, Pear Shape, Transparent

0.61ct Multicolor Opal, Pear Shape, Transparent

7.6 x 5.1 mm

$ 15.19

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6.51ct Multicolor Ruby In Fuchsite, Marquise, Translucent

6.51ct Multicolor Ruby In Fuchsite, Marquise, Translucent

20.7 x 10.4 mm

$ 48.71

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0.59ct Green Tourmaline, Emerald Cut, VS

0.59ct Green Tourmaline, Emerald Cut, VS

11.3 x 2.8 mm

$ 16.09

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3.37ct Orange Sunstone, Oval, Transparent

3.37ct Orange Sunstone, Oval, Transparent

11 x 9 mm (calibrated)

$ 20.27

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0.80ctw Green Demantoid Garnet, Round, VS

0.80ctw Green Demantoid Garnet, Round, VS

3.2 mm

$ 127.55

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18.19ct Orange Moonstone, Oval, Opaque

18.19ct Orange Moonstone, Oval, Opaque

20 x 15 mm (calibrated)

$ 27.18

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1.21ct Yellow Citrine, Round, VS

1.21ct Yellow Citrine, Round, VS

7 mm (calibrated)

$ 8.03

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2.89ctw Green Peridot, Square, VS

2.89ctw Green Peridot, Square, VS

5 x 5 mm (calibrated)

$ 28.78

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2.73ctw Pink Strawberry Quartz, Round, Transparent

2.73ctw Pink Strawberry Quartz, Round, Transparent

7 mm (calibrated)

$ 41.87

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1.42ct Pink Tourmaline, Round, Transparent

1.42ct Pink Tourmaline, Round, Transparent

6.5 mm (calibrated)

$ 21.66

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7.04ct Violet Chalcedony, Cushion, Translucent

7.04ct Violet Chalcedony, Cushion, Translucent

12 x 12 mm (calibrated)

$ 26.29

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0.84ct Pink Tourmaline, Oval, Transparent

0.84ct Pink Tourmaline, Oval, Transparent

6.1 x 4.9 mm

$ 33.47

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2.19ct Red Tourmaline, Oval, Transparent

2.19ct Red Tourmaline, Oval, Transparent

9 x 7 mm (calibrated)

$ 37.54

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3.54ct Multicolor Opal, Oval, Transparent

3.54ct Multicolor Opal, Oval, Transparent

14 x 10 mm (calibrated)

$ 88.99

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1.22ct Yellow Beryl, Trillion, VS

1.22ct Yellow Beryl, Trillion, VS

8 x 8 mm (calibrated)

$ 29.17

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3.59ct Yellow Citrine, Oval, VVS-VS

3.59ct Yellow Citrine, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 21.95

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4.68ctw Yellow Citrine, Square, VVS-VS

4.68ctw Yellow Citrine, Square, VVS-VS

8 x 8 mm (calibrated)

$ 35.90

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5.48ct Multicolor Pietersite, Oval, Opaque

5.48ct Multicolor Pietersite, Oval, Opaque

15 x 10 mm (calibrated)

$ 16.38

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1.52ct Orange Hessonite Garnet, Oval, VS-SI

1.52ct Orange Hessonite Garnet, Oval, VS-SI

7.7 x 6.5 mm

$ 30.28

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2.50ctw Brown Tourmaline, Pear Shape, VVS-VS

2.50ctw Brown Tourmaline, Pear Shape, VVS-VS

6.4 x 4.5 mm

$ 102.44

View Gem
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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

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 -> 10 star ratings

Great selection. Maybe too great i kept adding and deleting stuff because i found better looking ones

Posted By Edsor works in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Found a rock that met my need. Bought it!

Posted By Skot in May, 2026
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

The website was very easy to use.

Posted By Garnet in January, 2026
Source: Bizrate

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
→ View All GemSelect Reviews on Bizrate
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