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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
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Untreated Gemstones Treatment

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Orange Untreated Gemstones
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Yellow Untreated Gemstones
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12.62ct Multicolor Labradorite, Pear Shape, Translucent

12.62ct Multicolor Labradorite, Pear Shape, Translucent

18 x 13 mm (calibrated)

$ 27.90

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7.45ctw Brown Zircon, Oval, Transparent

7.45ctw Brown Zircon, Oval, Transparent

6 x 4.2 mm

$ 47.62

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23.01ctw Multicolor Fossil Coral, Oval, Opaque

23.01ctw Multicolor Fossil Coral, Oval, Opaque

20.6 x 12.9 mm

$ 50.41

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1.23ct Pink Tourmaline, Round, Transparent

1.23ct Pink Tourmaline, Round, Transparent

6.5 mm (calibrated)

$ 49.00

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3.05ctw Pink Malaya Garnet, Round, VS

3.05ctw Pink Malaya Garnet, Round, VS

5.5 mm (calibrated)

$ 119.76

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3.12ct Brown Tiger'S Eye, Oval, Opaque

3.12ct Brown Tiger'S Eye, Oval, Opaque

10 x 8 mm (calibrated)

$ 3.10

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0.83ct Green Tourmaline, Baguette, SI

0.83ct Green Tourmaline, Baguette, SI

8.5 x 4.4 mm

$ 22.64

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4.91ct Pink Strawberry Quartz, Oval, Translucent

4.91ct Pink Strawberry Quartz, Oval, Translucent

12 x 10 mm (calibrated)

$ 58.68

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2.16ct Pink Strawberry Quartz, Oval, Transparent

2.16ct Pink Strawberry Quartz, Oval, Transparent

9 x 7 mm (calibrated)

$ 10.76

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2.20ct Yellow Citrine, Trillion, VVS-VS

2.20ct Yellow Citrine, Trillion, VVS-VS

9 x 9 mm (calibrated)

$ 11.91

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19.83ct Multicolor Labradorite, Trillion, Translucent

19.83ct Multicolor Labradorite, Trillion, Translucent

18 x 18 mm (calibrated)

$ 43.84

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1.04ct Orange Citrine, Heart, VS

1.04ct Orange Citrine, Heart, VS

7 x 7 mm (calibrated)

$ 8.63

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5.42ctw Pink Sunstone, Round, Translucent

5.42ctw Pink Sunstone, Round, Translucent

9 mm (calibrated)

$ 32.07

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8.77ct Multicolor Ruby In Fuchsite, Marquise, Translucent

8.77ct Multicolor Ruby In Fuchsite, Marquise, Translucent

29.7 x 13.5 mm

$ 65.63

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33.87ct White Rainbow Moonstone, Oval, Translucent

33.87ct White Rainbow Moonstone, Oval, Translucent

30 x 18.1 mm

$ 33.73

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8.47ct Green Malachite, Oval, Opaque

8.47ct Green Malachite, Oval, Opaque

14 x 10 mm (calibrated)

$ 16.87

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4.80ct Black Star Diopside, Round, Opaque

4.80ct Black Star Diopside, Round, Opaque

9 mm (calibrated)

$ 23.90

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1.59ct Purple Kunzite, Fancy, VVS-VS

1.59ct Purple Kunzite, Fancy, VVS-VS

6.6 x 6.4 mm

$ 39.59

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2.01ctw Blue Kyanite, Oval, SI

2.01ctw Blue Kyanite, Oval, SI

7 x 5 mm (calibrated)

$ 38.04

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27.10ct Multicolor Jasper, Fancy, Opaque

27.10ct Multicolor Jasper, Fancy, Opaque

35.8 x 10.1 mm

$ 8.10

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3.53ct Turquoise Grandidierite, Oval, SI

3.53ct Turquoise Grandidierite, Oval, SI

10.9 x 9.4 mm

$ 154.70

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1.83ct Turquoise Grandidierite, Oval, VS-SI
Grandidierite Product Video (471963)

1.83ct Turquoise Grandidierite, Oval, VS-SI

9 x 7 mm (calibrated)

$ 240.59

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2.57ct Yellow Citrine, Oval, VS

2.57ct Yellow Citrine, Oval, VS

11 x 9 mm (calibrated)

$ 17.92

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3.92ct Multicolor Pietersite, Pear Shape, Opaque

3.92ct Multicolor Pietersite, Pear Shape, Opaque

14.6 x 8.8 mm

$ 11.71

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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 -> 9 star ratings

Fast snd easy to find what I was looking for

Posted By Bawb in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Easy to use. No issues. Large selection of gems.

Posted By CLTCJH in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Enjoy every moment

Posted By Ferns in October, 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 -> 10 star ratings

GemSelect offers excellent choices, prices & service- highly recommended! Unfortunately, prior to ordering a replacement gemstone, my jeweler neglected to mention it needed to be one that was a'cushion cuta' to fit the existing mount. Have yet to return/exchangea'

Posted By CJ in March, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Easy to use. Many options to find the right gemstone

Posted By Liz in May, 2026
Source: Bizrate
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