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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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For Example: 8-9
Bi-color Untreated Gemstones
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Orange Untreated Gemstones
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Yellow Untreated Gemstones
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0.49ct Pink Morganite, Pear Shape, VVS-VS

0.49ct Pink Morganite, Pear Shape, VVS-VS

7.4 x 4 mm

$ 29.53

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12.63ct Multicolor Quartz With Marcasite, Pear Shape, Transparent

12.63ct Multicolor Quartz With Marcasite, Pear Shape, Transparent

22.2 x 14.4 mm

$ 83.02

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2.88ctw Orange Hessonite Garnet, Oval, VS-SI

2.88ctw Orange Hessonite Garnet, Oval, VS-SI

8 x 6 mm (calibrated)

$ 57.37

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5.87ct Pink Strawberry Quartz, Oval, Translucent

5.87ct Pink Strawberry Quartz, Oval, Translucent

14 x 10 mm (calibrated)

$ 35.37

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5.07ctw Yellow Citrine, Oval, VVS-VS

5.07ctw Yellow Citrine, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 38.89

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19.96ctw Multicolor Moss Agate, Fancy, Translucent

19.96ctw Multicolor Moss Agate, Fancy, Translucent

23.2 x 16.2 mm

$ 19.88

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1.45ct Purple Tourmaline, Oval, VS

1.45ct Purple Tourmaline, Oval, VS

8.1 x 6.3 mm

$ 216.63

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1.46ct Orange Hessonite Garnet, Emerald Cut, VS
Hessonite Garnet Product Video (567688)

1.46ct Orange Hessonite Garnet, Emerald Cut, VS

6.3 x 6.2 mm

$ 27.19

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3.81ctw Red Pyrope Garnet, Heart, VVS-VS

3.81ctw Red Pyrope Garnet, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 29.22

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10.10ct Pink Rose Quartz, Pear Shape, Transparent
Rose Quartz Product Video (501484)

10.10ct Pink Rose Quartz, Pear Shape, Transparent

20.5 x 13.5 mm

$ 35.19

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3.52ctw Red Pyrope Garnet, Square, VS

3.52ctw Red Pyrope Garnet, Square, VS

4 x 4 mm (calibrated)

$ 26.99

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14.41ct Multicolor Agate, Oval, Opaque

14.41ct Multicolor Agate, Oval, Opaque

15.1 x 13.9 mm

$ 24.40

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1.67ct Green Tourmaline, Emerald Cut, VVS-VS

1.67ct Green Tourmaline, Emerald Cut, VVS-VS

19.3 x 3.3 mm

$ 43.92

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6.61ct Yellow Apatite, Emerald Cut, VS
Apatite Product Video (438941)

6.61ct Yellow Apatite, Emerald Cut, VS

10.6 x 10.4 mm

$ 340.37

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1.09ct Yellow Beryl, Oval, VVS-VS

1.09ct Yellow Beryl, Oval, VVS-VS

8.3 x 6.3 mm

$ 21.71

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1.71ct Multicolor Opal, Oval, Transparent

1.71ct Multicolor Opal, Oval, Transparent

10 x 8 mm (calibrated)

$ 42.58

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1.16ct White Rainbow Moonstone, Oval, Transparent

1.16ct White Rainbow Moonstone, Oval, Transparent

8 x 6 mm (calibrated)

$ 36.97

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22.80ct Pink Coral, Fancy, Opaque
Coral Product Video (344912)

22.80ct Pink Coral, Fancy, Opaque

30.9 x 20 mm

$ 317.92

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26.17ct Multicolor Agate, Oval, Opaque

26.17ct Multicolor Agate, Oval, Opaque

20 x 15 mm (calibrated)

$ 44.31

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24.36ct Gray Hematite, Square, Opaque
Hematite Product Video (554031)

24.36ct Gray Hematite, Square, Opaque

16x16 mm (calibrated)

$ 24.55

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23.12ct Multicolor Bloodstone, Fancy, Opaque

23.12ct Multicolor Bloodstone, Fancy, Opaque

28.2 x 19.2 mm

$ 10.36

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1.39ct Pink Tourmaline, Cushion, VS

1.39ct Pink Tourmaline, Cushion, VS

6.8 x 6.3 mm

$ 207.67

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22.08ct Brown Tiger'S Eye, Oval, Opaque

22.08ct Brown Tiger'S Eye, Oval, Opaque

26.5 x 16.8 mm

$ 24.19

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33.88ct Multicolor Jasper, Baguette, Opaque

33.88ct Multicolor Jasper, Baguette, Opaque

24.4 x 16.9 mm

$ 19.23

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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 -> 9 star ratings

If you have motion picture, then I will be more satisfied with.

Posted By Ray in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Took a chance on purchasing my gemstones from Gemselect and was impressed. 10/10

Posted By KT 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

Overall Rating -> 10 star ratings

I was looking for high-quality amethyst on this site, and I was able to compare size, color, and weight in detail before making a purchase.

Posted By Atsuhisa in January, 2026
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

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

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