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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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Yellow Untreated Gemstones
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4.01ct Yellow Citrine, Cushion, VVS-VS

4.01ct Yellow Citrine, Cushion, VVS-VS

14.2 x 8.6 mm

$ 30.76

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11.44ct Multicolor Amethyst Geode Slice, Fancy, Transparent

11.44ct Multicolor Amethyst Geode Slice, Fancy, Transparent

17.8 x 15 mm

$ 10.16

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1.23ct Green Tourmaline, Emerald Cut, VS

1.23ct Green Tourmaline, Emerald Cut, VS

16.1 x 3.4 mm

$ 32.34

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1.69ct Yellow Citrine, Emerald Cut, VVS-VS

1.69ct Yellow Citrine, Emerald Cut, VVS-VS

8 x 6 mm (calibrated)

$ 12.96

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18.57ct Blue Chalcedony, Cushion, Opaque

18.57ct Blue Chalcedony, Cushion, Opaque

26.4 x 14.7 mm

$ 46.25

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0.42ct Yellow Citrine, Marquise, VS

0.42ct Yellow Citrine, Marquise, VS

8 x 4 mm (calibrated)

$ 3.14

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2.21ct Orange Zircon, Oval, VVS

2.21ct Orange Zircon, Oval, VVS

8.1 x 6.8 mm

$ 60.54

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0.90ct Green Peridot, Oval, VVS-VS

0.90ct Green Peridot, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 6.27

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18.98ct Multicolor Rainbow Pyrite, Heart, Opaque

18.98ct Multicolor Rainbow Pyrite, Heart, Opaque

24.5 x 22.4 mm

$ 49.15

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22.14ct White Amazonite, Fancy, Translucent

22.14ct White Amazonite, Fancy, Translucent

35.6 x 9 mm

$ 12.13

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5.61ctw Violet Amethyst, Oval, Transparent

5.61ctw Violet Amethyst, Oval, Transparent

10 x 8 mm (calibrated)

$ 30.73

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5.68ctw Yellow Citrine, Oval, VVS-VS

5.68ctw Yellow Citrine, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 31.12

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2.10ctw Orange Citrine, Heart, VS

2.10ctw Orange Citrine, Heart, VS

7 x 7 mm (calibrated)

$ 17.43

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2.29ct Orange Hessonite Garnet, Oval, VS-SI

2.29ct Orange Hessonite Garnet, Oval, VS-SI

8.6 x 7.2 mm

$ 50.18

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1.94ct Pink Tourmaline, Emerald Cut, VVS

1.94ct Pink Tourmaline, Emerald Cut, VVS

15.6 x 4.1 mm

$ 146.66

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2.48ct Yellow Citrine, Oval, VVS

2.48ct Yellow Citrine, Oval, VVS

14.2 x 7 mm

$ 17.29

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8.96ct Gray Star Sapphire, Round, Opaque
Star Sapphire Product Video (470805)

8.96ct Gray Star Sapphire, Round, Opaque

10.5 mm

$ 312.35

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45.90ct White Rainbow Moonstone, Oval, Translucent

45.90ct White Rainbow Moonstone, Oval, Translucent

32.4 x 23.6 mm

$ 38.10

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33.26ct Multicolor Jasper, Fancy, Opaque

33.26ct Multicolor Jasper, Fancy, Opaque

34 x 11.6 mm

$ 6.62

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9.07ct White Dendritic Agate, Pear Shape, Translucent

9.07ct White Dendritic Agate, Pear Shape, Translucent

19.9 x 14 mm

$ 18.07

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41.67ct Multicolor Jasper, Pear Shape, Opaque

41.67ct Multicolor Jasper, Pear Shape, Opaque

32.3 x 26.4 mm

$ 33.21

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2.38ctw Pink Strawberry Quartz, Oval, Translucent

2.38ctw Pink Strawberry Quartz, Oval, Translucent

8 x 6 mm (calibrated)

$ 14.74

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73.68ct Violet Charoite, Fancy, Opaque
Charoite Product Video (471319)

73.68ct Violet Charoite, Fancy, Opaque

47.5 x 28.2 mm

$ 61.15

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0.68ct Green Tourmaline, Emerald Cut, VVS

0.68ct Green Tourmaline, Emerald Cut, VVS

4.8 x 4.6 mm

$ 33.86

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

On the clarity options it goes "and better" so if youre looking for si specifically and you click si and better it still shows you basically everything. It just removes the opaques. Itd be nice if it was vs only, vss only, si only, etc

Posted By Iamnotakrustykrab in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great selection of gems at a reasonable price

Posted By Curt in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

My current project is something BLUE . Opal earrings with matching tennis bracelet for her wedding. The opals and sixty two sapphires VVS & VS are AMAZINGLY BEAUTIFUL. The private jewelers were impressed by the clarity and inclusion free of the sapphires . I want to say thank you for the High quality sapphires that I purchased for my daughtera's wedding.

Posted By My real name Dean or Wandering about in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I liked the selection of gems, and price. I did not like your PayPal process. I already have a PP account and you want me to sign up for another.

Posted By CLTCJH in May, 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

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
→ View All GemSelect Reviews on Bizrate
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