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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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1.15ct Orange Hessonite Garnet, Oval, VS

1.15ct Orange Hessonite Garnet, Oval, VS

7.1 x 5.9 mm

$ 18.91

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3.45ct Yellow Citrine, Emerald Cut, Transparent

3.45ct Yellow Citrine, Emerald Cut, Transparent

12 x 10 mm (calibrated)

$ 26.46

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1.91ctw Orange Sunstone, Oval, Translucent

1.91ctw Orange Sunstone, Oval, Translucent

8 x 6 mm (calibrated)

$ 13.31

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0.95ct Green Tourmaline, Baguette, VVS

0.95ct Green Tourmaline, Baguette, VVS

8.9 x 3.3 mm

$ 33.12

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7.88ct Turquoise Larimar, Pear Shape, Opaque

7.88ct Turquoise Larimar, Pear Shape, Opaque

16 x 12 mm (calibrated)

$ 94.08

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2.40ctw Brown Tiger'S Eye, Oval, Opaque

2.40ctw Brown Tiger'S Eye, Oval, Opaque

8 x 6 mm (calibrated)

$ 2.39

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2.47ct Orange Hessonite Garnet, Oval, VS-SI

2.47ct Orange Hessonite Garnet, Oval, VS-SI

8.8 x 7.4 mm

$ 36.84

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15.40ct Multicolor Agate, Round, Opaque

15.40ct Multicolor Agate, Round, Opaque

14 mm (calibrated)

$ 26.08

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1.52ctw Red Rhodolite Garnet, Square, VS

1.52ctw Red Rhodolite Garnet, Square, VS

5 x 5 mm (calibrated)

$ 13.30

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1.13ct Brown Smoky Quartz, Round, VVS

1.13ct Brown Smoky Quartz, Round, VVS

7 mm (calibrated)

$ 7.88

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1.05ct Brown Color-Change Garnet, Oval, VVS

1.05ct Brown Color-Change Garnet, Oval, VVS

6.3 x 5 mm

$ 83.88

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5.25ctw Multicolor Labradorite, Baguette, Translucent

5.25ctw Multicolor Labradorite, Baguette, Translucent

9 x 7 mm (calibrated)

$ 7.22

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0.67ct Yellow Citrine, Pear Shape, VVS

0.67ct Yellow Citrine, Pear Shape, VVS

7 x 5 mm (calibrated)

$ 3.34

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2.98ct Orange Hessonite Garnet, Oval, VS-SI

2.98ct Orange Hessonite Garnet, Oval, VS-SI

9.6 x 8.1 mm

$ 58.76

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1.60ct Orange Hessonite Garnet, Cushion, VS

1.60ct Orange Hessonite Garnet, Cushion, VS

7 x 7 mm (calibrated)

$ 27.26

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15.32ct Violet Amethyst, Flower Cut, Translucent

15.32ct Violet Amethyst, Flower Cut, Translucent

21 x 14.6 mm

$ 45.77

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2.24ct Black Cat'S Eye Scapolite, Oval, Translucent

2.24ct Black Cat'S Eye Scapolite, Oval, Translucent

9 x 7 mm (calibrated)

$ 12.27

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7.88ct Yellow Apatite, Oval, VS
Apatite Product Video (407294)

7.88ct Yellow Apatite, Oval, VS

15.2 x 12 mm

$ 325.48

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3.79ct Yellow Citrine, Oval, VS

3.79ct Yellow Citrine, Oval, VS

11 x 9 mm (calibrated)

$ 29.07

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4.12ct Violet Amethyst, Pear Shape, VVS

4.12ct Violet Amethyst, Pear Shape, VVS

15 x 10 mm (calibrated)

$ 29.93

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1.89ct Yellow Citrine, Round, VVS

1.89ct Yellow Citrine, Round, VVS

8 mm (calibrated)

$ 13.18

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2.46ct Black Cat'S Eye Scapolite, Round, Translucent

2.46ct Black Cat'S Eye Scapolite, Round, Translucent

9 mm (calibrated)

$ 13.48

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2.09ct Multicolor Labradorite, Round, Translucent

2.09ct Multicolor Labradorite, Round, Translucent

8 mm (calibrated)

$ 5.08

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6.90ct Pink Strawberry Quartz, Round, Translucent

6.90ct Pink Strawberry Quartz, Round, Translucent

13 mm (calibrated)

$ 38.35

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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

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

Very good place to buy gemstones

Posted By Elansary in March, 2026
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Overall Rating -> 10 star ratings

Enjoy every moment

Posted By Ferns in October, 2025
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Overall Rating -> 10 star ratings

Very neat and to the point

Posted By Botha in March, 2026
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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 ability to choose from many options of shapes, gemstone type, color, and so forth. It is fun!

Posted By Geof in November, 2025
Source: Bizrate
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