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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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Yellow Untreated Gemstones
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1.52ctw Yellow Citrine, Heart, VVS-VS

1.52ctw Yellow Citrine, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 10.60

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0.97ct Blue Kyanite, Round, VS-SI

0.97ct Blue Kyanite, Round, VS-SI

6 mm (calibrated)

$ 20.19

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32.31ct Green Fluorite, Oval, Transparent
Fluorite Product Video (475630)

32.31ct Green Fluorite, Oval, Transparent

20.9 x 16.2 mm

$ 141.59

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4.43ct Green Druzy Variscite, Fancy, Opaque

4.43ct Green Druzy Variscite, Fancy, Opaque

17.6 x 11 mm

$ 20.92

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1.10ct Purple Sapphire, Cushion, VS-SI
Sapphire Product Video (447680)

1.10ct Purple Sapphire, Cushion, VS-SI

6 x 5.5 mm

$ 527.35

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8.06ct Multicolor Ruby-Zoisite, Square, Opaque

8.06ct Multicolor Ruby-Zoisite, Square, Opaque

11 x 11 mm (calibrated)

$ 19.59

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0.70ct Green Sphene, Round, VS-SI

0.70ct Green Sphene, Round, VS-SI

5.5 mm (calibrated)

$ 42.18

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0.73ct Yellow Citrine, Heart, VVS-VS

0.73ct Yellow Citrine, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 5.09

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15.28ct Turquoise Larimar, Oval, Opaque

15.28ct Turquoise Larimar, Oval, Opaque

20 x 15 mm (calibrated)

$ 182.43

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0.77ct Violet Amethyst, Cushion, VVS

0.77ct Violet Amethyst, Cushion, VVS

7 x 5 mm (calibrated)

$ 5.37

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1.15ct Yellow Citrine, Emerald Cut, VS

1.15ct Yellow Citrine, Emerald Cut, VS

8 x 6 mm (calibrated)

$ 9.16

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1.17ct Yellow Beryl, Oval, VVS-VS

1.17ct Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 23.31

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10.85ct Multicolor Agate, Oval, Opaque

10.85ct Multicolor Agate, Oval, Opaque

16 x 12 mm (calibrated)

$ 18.38

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6.94ctw White Moonstone, Round, Translucent

6.94ctw White Moonstone, Round, Translucent

9 mm (calibrated)

$ 19.02

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0.82ct Orange Hessonite Garnet, Oval, VVS-VS

0.82ct Orange Hessonite Garnet, Oval, VVS-VS

6.8 x 5.4 mm

$ 12.53

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9.78ct Black Tourmaline, Cushion, Opaque

9.78ct Black Tourmaline, Cushion, Opaque

13.3 x 12.1 mm

$ 48.70

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1.86ct Pink Tourmaline, Emerald Cut, VS

1.86ct Pink Tourmaline, Emerald Cut, VS

11.3 x 4.9 mm

$ 140.60

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2.15ct Multicolor Opal, Oval, Transparent

2.15ct Multicolor Opal, Oval, Transparent

11.8 x 8.6 mm

$ 53.54

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1.01ct Green Chrysoberyl, Marquise, VVS
Chrysoberyl Product Video (366327)

1.01ct Green Chrysoberyl, Marquise, VVS

9 x 4.5 mm

$ 98.14

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0.64ct Pink Morganite, Pear Shape, VVS-VS

0.64ct Pink Morganite, Pear Shape, VVS-VS

7.8 x 4.4 mm

$ 38.56

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1.62ct Green Tourmaline, Emerald Cut, VS

1.62ct Green Tourmaline, Emerald Cut, VS

13.2 x 3.8 mm

$ 35.59

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2.51ct Orange Hessonite Garnet, Cushion, VVS-VS

2.51ct Orange Hessonite Garnet, Cushion, VVS-VS

8 x 6 mm (calibrated)

$ 45.00

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0.96ct Brown Color-Change Garnet, Oval, VS

0.96ct Brown Color-Change Garnet, Oval, VS

6.2 x 4.6 mm

$ 76.69

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57.64ct Brown Jasper, Oval, Opaque

57.64ct Brown Jasper, Oval, Opaque

29.7 x 26.1 mm

$ 29.68

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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

easy site to navigate

Posted By Curt's Cabochons in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

this site is awesome. I was able to look at the products think about purchasing and come back and find the same products. With the amount of inventory gem select has. Its awesome to be able to filter the way that they allow you too.

Posted By Tommyp in November, 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

I had a very easy time navigating the web page and using filters to find what I was looking for. The varied selection was nice to see and pricing is clear and fair.

Posted By Mattick in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I feel Gemselect is a trustworthy company to buy from

Posted By Becky in October, 2025
Source: Bizrate
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