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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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Orange Untreated Gemstones
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Yellow Untreated Gemstones
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4.62ctw Orange Hessonite Garnet, Cushion, VS-SI

4.62ctw Orange Hessonite Garnet, Cushion, VS-SI

7 x 7 mm (calibrated)

$ 67.34

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21.42ct Green Druzy Variscite, Fancy, Opaque

21.42ct Green Druzy Variscite, Fancy, Opaque

29.4 x 19.9 mm

$ 90.89

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0.06ct White Diamond, Marquise, VVS

0.06ct White Diamond, Marquise, VVS

4 x 2 mm (calibrated)

$ 208.54

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16.75ct Violet Amethyst, Oval, VS
Amethyst Product Video (745407)

16.75ct Violet Amethyst, Oval, VS

20 x 15 mm (calibrated)

$ 111.22

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2.61ct Yellow Rutile Quartz, Pear Shape, Transparent

2.61ct Yellow Rutile Quartz, Pear Shape, Transparent

10.8 x 7.1 mm

$ 7.03

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0.85ct Green Peridot, Oval, VS

0.85ct Green Peridot, Oval, VS

7 x 5 mm (calibrated)

$ 11.85

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0.24ct Green Tsavorite Garnet, Oval, VS

0.24ct Green Tsavorite Garnet, Oval, VS

4.2 x 3 mm

$ 11.95

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0.90ct Green Peridot, Oval, VS

0.90ct Green Peridot, Oval, VS

7 x 5 mm (calibrated)

$ 6.27

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2.07ctw Orange Sunstone, Oval, Translucent

2.07ctw Orange Sunstone, Oval, Translucent

6 x 4 mm (calibrated)

$ 15.88

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1.26ct Pink Tourmaline, Emerald Cut, VVS

1.26ct Pink Tourmaline, Emerald Cut, VVS

9.4 x 4.2 mm

$ 95.25

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0.92ct Yellow Citrine, Trillion, VS

0.92ct Yellow Citrine, Trillion, VS

7 x 7 mm (calibrated)

$ 7.06

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20.95ct Blue Lazulite, Fancy, Opaque

20.95ct Blue Lazulite, Fancy, Opaque

29.3 x 22.8 mm

$ 20.52

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9.70ct Multicolor Labradorite, Marquise, Translucent

9.70ct Multicolor Labradorite, Marquise, Translucent

20 x 10 mm (calibrated)

$ 21.45

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25.13ct Gray Hematite, Square, Opaque

25.13ct Gray Hematite, Square, Opaque

15 x 15 mm (calibrated)

$ 24.51

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0.42ct Yellow Citrine, Oval, VVS-VS

0.42ct Yellow Citrine, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 2.93

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1.20ct Orange Hessonite Garnet, Cushion, VS-SI

1.20ct Orange Hessonite Garnet, Cushion, VS-SI

6 x 6 mm (calibrated)

$ 18.77

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1.43ct Orange Zircon, Round, VVS-VS

1.43ct Orange Zircon, Round, VVS-VS

6.5 mm (calibrated)

$ 31.33

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10.31ct Multicolor Labradorite, Pear Shape, Translucent

10.31ct Multicolor Labradorite, Pear Shape, Translucent

16 x 12 mm (calibrated)

$ 22.80

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23.38ct Black Tourmaline, Emerald Cut, Opaque

23.38ct Black Tourmaline, Emerald Cut, Opaque

21.1 x 12.4 mm

$ 116.43

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14.59ct Multicolor Ruby-Zoisite, Marquise, Opaque

14.59ct Multicolor Ruby-Zoisite, Marquise, Opaque

22.3 x 12.2 mm

$ 39.96

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2.01ct Green Tourmaline, Emerald Cut, VVS-VS

2.01ct Green Tourmaline, Emerald Cut, VVS-VS

23 x 3.6 mm

$ 55.06

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39.68ct Green Idocrase, Oval, Opaque

39.68ct Green Idocrase, Oval, Opaque

33.4 x 23.3 mm

$ 19.76

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25.99ct Green Serpentine, Oval, Translucent

25.99ct Green Serpentine, Oval, Translucent

31.8 x 19.2 mm

$ 55.66

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2.67ct Yellow Rutile Topaz, Pear Shape, Transparent

2.67ct Yellow Rutile Topaz, Pear Shape, Transparent

13.5 x 6.8 mm

$ 55.40

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

GemSelect is always my first choice for purchasing gemstones. The fact that the gems are always exactly as described and pictured on the website has earned my trust many times over. Even when I don't buy, I still love browsing all the beautiful stones. My new favorites are the bright green Tsavorites!

Posted By Lkcisneros in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Over pretty well experience the your website no complaints about it very easy reliable service provided

Posted By Blas in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

The stones are very nice.

Posted By Mvk in August, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

I visited several online loose stone shops trying to find rare stones. I finally found one that I've been looking for here, and very satisfied. Looking forward to receive the item in 3 weeks.

Posted By Atsu in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

hassle free experience.

Posted By Jhidron in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

No problems. I had a minor address issue in the past and someone got back to me very quickly and we resolved the issue satisfactorily. I appreciated the quick, concerned response. So important when buyer/seller are so far apart in distance. Thank you Gem Select. Keep up the good work!

Posted By Orphanboy in December, 2025
Source: Bizrate
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