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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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Bi-color Untreated Gemstones
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Multicolor Untreated Gemstones
Orange Untreated Gemstones
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5.35ct Green Fluorite, Oval, Transparent

5.35ct Green Fluorite, Oval, Transparent

11.4 x 9.5 mm

$ 22.01

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2.50ct Blue Chalcedony, Oval, Transparent

2.50ct Blue Chalcedony, Oval, Transparent

10 x 8 mm (calibrated)

$ 4.98

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10.14ctw Multicolor Labradorite, Round, Translucent

10.14ctw Multicolor Labradorite, Round, Translucent

10 mm (calibrated)

$ 24.64

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19.30ct Multicolor Quartz With Marcasite, Oval, Transparent

19.30ct Multicolor Quartz With Marcasite, Oval, Transparent

23.7 x 15.8 mm

$ 126.87

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0.68ctw Blue Kyanite, Round, VS-SI

0.68ctw Blue Kyanite, Round, VS-SI

4.2 mm

$ 16.93

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3.33ctw White Rainbow Moonstone, Square, Transparent

3.33ctw White Rainbow Moonstone, Square, Transparent

3 x 3 mm (calibrated)

$ 62.02

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2.53ct Pink Strawberry Quartz, Oval, Transparent

2.53ct Pink Strawberry Quartz, Oval, Transparent

10 x 8 mm (calibrated)

$ 18.79

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1.05ct Yellow Color-Change Diaspore, Cushion, VS-SI

1.05ct Yellow Color-Change Diaspore, Cushion, VS-SI

8.9 x 5.4 mm

$ 42.84

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7.80ct Multicolor Coral, Round, Opaque

7.80ct Multicolor Coral, Round, Opaque

16 mm (calibrated)

$ 24.35

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7.39ct Pink Strawberry Quartz, Oval, Transparent

7.39ct Pink Strawberry Quartz, Oval, Transparent

13 x 11 mm (calibrated)

$ 44.54

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2.89ct Multicolor Labradorite, Pear Shape, Translucent

2.89ct Multicolor Labradorite, Pear Shape, Translucent

10 x 7 mm (calibrated)

$ 6.39

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6.83ct Turquoise Tourmaline, Flower Cut, Transparent
Tourmaline Product Video (690750)

6.83ct Turquoise Tourmaline, Flower Cut, Transparent

11.5 x 5.9 mm

$ 133.12

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6.97ct Yellow Citrine, Oval, VVS

6.97ct Yellow Citrine, Oval, VVS

14.5 x 10.5 mm

$ 45.82

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1.38ct Orange Hessonite Garnet, Oval, VS

1.38ct Orange Hessonite Garnet, Oval, VS

7.5 x 6.2 mm

$ 27.49

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4.23ct Red Rhodolite Garnet, Pear Shape, VVS
Rhodolite Garnet Product Video (745506)

4.23ct Red Rhodolite Garnet, Pear Shape, VVS

13.1 x 8.2 mm

$ 175.55

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4.17ct Multicolor Opal, Oval, Transparent

4.17ct Multicolor Opal, Oval, Transparent

13.9 x 10.9 mm

$ 186.90

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15.82ct Multicolor Opal, Oval, Transparent
Opal Product Video (752455)

15.82ct Multicolor Opal, Oval, Transparent

22.4 x 17.6 mm

$ 393.92

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0.78ct Orange Zircon, Oval, VS

0.78ct Orange Zircon, Oval, VS

6 x 4 mm (calibrated)

$ 19.42

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1.08ct Green Tourmaline, Oval, VVS-VS

1.08ct Green Tourmaline, Oval, VVS-VS

7.1 x 5.4 mm

$ 53.78

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0.98ct Green Peridot, Oval, VS

0.98ct Green Peridot, Oval, VS

7 x 5 mm (calibrated)

$ 6.83

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11.25ct Green Maw-Sit-Sit, Oval, Opaque

11.25ct Green Maw-Sit-Sit, Oval, Opaque

14 x 11.5 mm

$ 36.98

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0.87ct Yellow Color-Change Diaspore, Emerald Cut, VVS

0.87ct Yellow Color-Change Diaspore, Emerald Cut, VVS

8 x 4.1 mm

$ 45.92

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5.03ct Pink Kunzite, Cushion, VVS

5.03ct Pink Kunzite, Cushion, VVS

9.8 x 8.5 mm

$ 132.77

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2.08ct Orange Hessonite Garnet, Cushion, VS-SI

2.08ct Orange Hessonite Garnet, Cushion, VS-SI

7 x 7 mm (calibrated)

$ 33.71

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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 have shopped at Gemselect for nearly 20 years. I especially like that you see pictures of the exact gem you are purchasing. You are a trusted source.

Posted By DNaber in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

They have a wonderful selection of gems of all sorts, shapes, cuts, and quality. I am very particular about the quality of stones I buy, and found many with VVS clarity and excellent cut and polish. I am thrilled with each of the stones I purchased, and would definitely recommend GemSelect to everyone.

Posted By Debsarabs in February, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

It was a good interaction I got a good gemstone for cheap

Posted By Jon in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

IT WAS GREAT SIMPLE I WAS ABLE TO MAKE AN ACCOUNT EASY AND WAS ABLE TO FAVORITE ALL OF MY FINAL SELECTED GEMS, I JUST LOVE IT.

Posted By YE in October, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Very easy to navigate with a great selection.

Posted By Bar181 in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I love the product and the details about each of them.

Posted By Love It! in July, 2025
Source: Bizrate
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