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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
Untreated Gemstones Price
Untreated Gemstones Treatment

Size Explained

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For Example: 8-9
Bi-color Untreated Gemstones
Black Untreated Gemstones
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Multicolor Untreated Gemstones
Orange Untreated Gemstones
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Yellow Untreated Gemstones
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0.78ct Green Tourmaline, Emerald Cut, VVS-VS

0.78ct Green Tourmaline, Emerald Cut, VVS-VS

8.9 x 4.1 mm

$ 19.42

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3.21ctw White Topaz, Cushion, VVS-VS

3.21ctw White Topaz, Cushion, VVS-VS

4.6 x 4.6 mm

$ 17.59

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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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2.25ct Red Almandine Garnet, Oval, VS

2.25ct Red Almandine Garnet, Oval, VS

9 x 7 mm (calibrated)

$ 84.04

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7.66ct Violet Amethyst, Pear Shape, VS

7.66ct Violet Amethyst, Pear Shape, VS

18 x 13 mm (calibrated)

$ 58.25

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8.84ct Multicolor Agate, Oval, Opaque

8.84ct Multicolor Agate, Oval, Opaque

13.3 x 11.9 mm

$ 14.97

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10.31ct White Rose Quartz, Flower Cut, Transparent

10.31ct White Rose Quartz, Flower Cut, Transparent

21.8 x 21.6 mm

$ 22.59

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1.27ct Gray Sillimanite Cat'S Eye, Oval, Transparent

1.27ct Gray Sillimanite Cat'S Eye, Oval, Transparent

6.8 x 4.8 mm

$ 5.06

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2.91ct Pink Tourmaline, Emerald Cut, VVS-VS

2.91ct Pink Tourmaline, Emerald Cut, VVS-VS

14.7 x 4.8 mm

$ 223.17

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76.80ct Multicolor Jasper, Oval, Opaque

76.80ct Multicolor Jasper, Oval, Opaque

36.4 x 27.4 mm

$ 39.55

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2.22ct Green Peridot, Cushion, VS
Peridot Product Video (446152)

2.22ct Green Peridot, Cushion, VS

8.6 x 7.7 mm

$ 79.98

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36.03ct Multicolor Tiger'S Eye Matrix, Oval, Opaque

36.03ct Multicolor Tiger'S Eye Matrix, Oval, Opaque

32.7 x 23.1 mm

$ 35.89

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7.86ct Yellow Citrine, Emerald Cut, VVS-VS

7.86ct Yellow Citrine, Emerald Cut, VVS-VS

14 x 10 mm (calibrated)

$ 60.27

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0.64ct Yellow Color-Change Diaspore, Round, VVS-VS

0.64ct Yellow Color-Change Diaspore, Round, VVS-VS

5.5 mm (calibrated)

$ 22.47

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2.00ct Yellow Citrine, Pear Shape, VVS-VS

2.00ct Yellow Citrine, Pear Shape, VVS-VS

10.4 x 7.3 mm

$ 15.34

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3.06ct Yellow Citrine, Pear Shape, VVS-VS

3.06ct Yellow Citrine, Pear Shape, VVS-VS

12.4 x 8.8 mm

$ 23.46

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1.16ct Green Peridot, Oval, VS

1.16ct Green Peridot, Oval, VS

8 x 6 mm (calibrated)

$ 17.33

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19.08ct Blue Chalcedony, Cushion, Opaque

19.08ct Blue Chalcedony, Cushion, Opaque

20 x 19.1 mm

$ 47.51

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2.62ct Green Fluorite, Pear Shape, Transparent

2.62ct Green Fluorite, Pear Shape, Transparent

10 x 8 mm (calibrated)

$ 10.44

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14.55ct Blue Color-Change Fluorite, Round, VVS-VS
Color-Change Fluorite Product Video (445141)

14.55ct Blue Color-Change Fluorite, Round, VVS-VS

15 mm (calibrated)

$ 399.79

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10.63ct Yellow Citrine, Oval, VVS

10.63ct Yellow Citrine, Oval, VVS

18 x 13 mm (calibrated)

$ 81.52

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0.60ct Yellow Color-Change Diaspore, Cushion, VVS-VS

0.60ct Yellow Color-Change Diaspore, Cushion, VVS-VS

5.2 x 4.4 mm

$ 31.67

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2.29ct Orange Hessonite Garnet, Oval, VS-SI

2.29ct Orange Hessonite Garnet, Oval, VS-SI

8.7 x 7.3 mm

$ 41.80

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0.77ct Green Peridot, Oval, VVS-VS

0.77ct Green Peridot, Oval, VVS-VS

4.5 x 6.4 mm

$ 6.91

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

I love the products. I've bought them as gifts and people love my gifts

Posted By Love it! in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Great! Affordable

Posted By Spinellope in April, 2026
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Overall Rating -> 10 star ratings

I have a beautiful emerald I purchased from a company names gemselect and they are awesome! You should try them out?

Posted By Lynn in September, 2025
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Overall Rating -> 10 star ratings

Love the precise descriptions and calibrations of hte loose gemstones. Would like to have seen more variety in the size gem I was looking for.

Posted By RenoRose in January, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

It was great!

Posted By Annie in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

My experience has always been fantastic. Today I saved 6 gems to email a customer looking for a particular color blend to fit into an east west setting, so her options were limited, but we found one she wanted, deleted all the others in the cart and order the gem she selected. It was helpful to be able to put them in the cart so I could save them until she selected the one she wanted without having to research all of them again.

Posted By RJ in January, 2026
Source: Bizrate
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