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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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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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2.53ctw Orange Sunstone, Oval, Translucent

2.53ctw Orange Sunstone, Oval, Translucent

8 x 6 mm (calibrated)

$ 15.53

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1.06ct Yellow Color-Change Diaspore, Cushion, VS

1.06ct Yellow Color-Change Diaspore, Cushion, VS

6.6 x 5.3 mm

$ 55.47

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5.64ct Green Malachite, Oval, Opaque

5.64ct Green Malachite, Oval, Opaque

14 x 10 mm (calibrated)

$ 5.62

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2.13ct Pink Kunzite, Pear Shape, VVS-VS

2.13ct Pink Kunzite, Pear Shape, VVS-VS

9 x 6 mm (calibrated)

$ 53.04

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3.96ct Violet Amethyst, Round, Transparent

3.96ct Violet Amethyst, Round, Transparent

10.4 mm

$ 27.61

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19.43ct Green Maw-Sit-Sit, Baguette, Opaque

19.43ct Green Maw-Sit-Sit, Baguette, Opaque

15.8 x 13.2 mm

$ 63.86

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8.94ctw Green Prehnite, Fancy, Translucent

8.94ctw Green Prehnite, Fancy, Translucent

15 x 10 mm (calibrated)

$ 14.69

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3.23ct Yellow Rutile Topaz, Pear Shape, Transparent

3.23ct Yellow Rutile Topaz, Pear Shape, Transparent

12.5 x 8.2 mm

$ 67.02

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7.51ct Yellow Apatite, Emerald Cut, VS
Apatite Product Video (395810)

7.51ct Yellow Apatite, Emerald Cut, VS

10.4 x 10.4 mm

$ 305.42

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9.13ct Blue Larimar, Oval, Opaque

9.13ct Blue Larimar, Oval, Opaque

16 x 12 mm (calibrated)

$ 82.54

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3.12ctw White Rainbow Moonstone, Pear Shape, Transparent

3.12ctw White Rainbow Moonstone, Pear Shape, Transparent

5 x 5 mm (calibrated)

$ 68.37

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1.01ctw Violet Amethyst, Marquise, VS

1.01ctw Violet Amethyst, Marquise, VS

8 x 4 mm (calibrated)

$ 6.71

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25.77ct Green Jade, Fancy, Translucent

25.77ct Green Jade, Fancy, Translucent

30.9 x 14.1 mm

$ 16.09

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0.83ct Brown Color-Change Garnet, Cushion, VVS-VS

0.83ct Brown Color-Change Garnet, Cushion, VVS-VS

7.4 x 4.1 mm

$ 81.84

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1.68ct Orange Citrine, Oval, VS-SI

1.68ct Orange Citrine, Oval, VS-SI

9 x 7 mm (calibrated)

$ 16.73

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1.09ct Purple Rhodolite Garnet, Oval, VS

1.09ct Purple Rhodolite Garnet, Oval, VS

7 x 5 mm (calibrated)

$ 28.95

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18.61ct Violet Amethyst, Cushion, VVS-VS

18.61ct Violet Amethyst, Cushion, VVS-VS

18 x 18 mm (calibrated)

$ 129.75

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31.32ct Multicolor Coral, Oval, Translucent

31.32ct Multicolor Coral, Oval, Translucent

34.8 x 23.7 mm

$ 68.62

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31.46ct Multicolor Quartz With Marcasite, Oval, Transparent
Quartz With Marcasite Product Video (521443)

31.46ct Multicolor Quartz With Marcasite, Oval, Transparent

31.4 x 16.5 mm

$ 206.81

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11.12ct Multicolor Chrysocolla, Oval, Opaque

11.12ct Multicolor Chrysocolla, Oval, Opaque

20.2 x 14.3 mm

$ 18.94

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5.17ctw Yellow Citrine, Oval, VVS

5.17ctw Yellow Citrine, Oval, VVS

10 x 8 mm (calibrated)

$ 28.33

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2.04ct Purple Rhodolite Garnet, Oval, VS

2.04ct Purple Rhodolite Garnet, Oval, VS

8.3 x 6.7 mm

$ 81.27

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3.22ct Yellow Citrine, Oval, VS

3.22ct Yellow Citrine, Oval, VS

11 x 9 mm (calibrated)

$ 22.45

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12.50ct Green Tourmaline, Fancy, Translucent
Tourmaline Product Video (472718)

12.50ct Green Tourmaline, Fancy, Translucent

20.6 x 20.5 mm

$ 136.95

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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

overall great

Posted By SR in April, 2026
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

Love, and have always loved, your website.

Posted By Aberabic in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I always purchase my stones from GemSelect, their products are high quality and customer service is always great. I also like the fact that I am able to purchase unique items

Posted By Desperaux in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I needed a very specific color of tourmaline and Gem Select had it. I had to get the client to agree and then ordered the stone. It arrived better than pictured and we all were very happy.

Posted By Tim W in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Very pleasant

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