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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
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35.89ct Multicolor Jasper, Fancy, Opaque

35.89ct Multicolor Jasper, Fancy, Opaque

41.2 x 11.8 mm

$ 10.72

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3.22ct Pink Strawberry Quartz, Oval, Transparent

3.22ct Pink Strawberry Quartz, Oval, Transparent

11 x 9 mm (calibrated)

$ 24.15

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4.02ctw Yellow Citrine, Pear Shape, VVS-VS

4.02ctw Yellow Citrine, Pear Shape, VVS-VS

8 x 5 mm (calibrated)

$ 25.44

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6.15ct Orange Moonstone, Oval, Translucent

6.15ct Orange Moonstone, Oval, Translucent

13.4 x 10.4 mm

$ 13.28

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2.00ct Orange Hessonite Garnet, Emerald Cut, SI

2.00ct Orange Hessonite Garnet, Emerald Cut, SI

8 x 6 mm (calibrated)

$ 34.07

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6.38ct Brown Tiger'S Eye, Baguette, Opaque

6.38ct Brown Tiger'S Eye, Baguette, Opaque

12 x 10 mm (calibrated)

$ 6.36

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10.83ctw Multicolor Pietersite, Oval, Opaque

10.83ctw Multicolor Pietersite, Oval, Opaque

18.1 x 12.2 mm

$ 26.54

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22.14ctw Green Prehnite, Flower Cut, Transparent

22.14ctw Green Prehnite, Flower Cut, Transparent

16.3 x 10.8 mm

$ 33.47

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3.92ct Violet Amethyst, Briolette, VS

3.92ct Violet Amethyst, Briolette, VS

9.6 x 8.1 mm

$ 14.32

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19.54ct Purple Ruby-Zoisite, Flower Cut, Opaque

19.54ct Purple Ruby-Zoisite, Flower Cut, Opaque

19.5 x 19.5 mm

$ 23.75

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18.52ct Multicolor Agate, Oval, Opaque

18.52ct Multicolor Agate, Oval, Opaque

21.4 x 16.1 mm

$ 14.76

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26.27ct Blue Aventurine, Fancy, Opaque

26.27ct Blue Aventurine, Fancy, Opaque

34.3 x 10.2 mm

$ 7.85

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1.07ct Blue Kyanite, Oval, SI

1.07ct Blue Kyanite, Oval, SI

7.5 x 5 mm

$ 23.45

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4.79ct Violet Amethyst, Pear Shape, VVS

4.79ct Violet Amethyst, Pear Shape, VVS

14 x 10 mm (calibrated)

$ 34.80

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1.03ct Pink Strawberry Quartz, Oval, Translucent

1.03ct Pink Strawberry Quartz, Oval, Translucent

7.6 x 6 mm

$ 13.03

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22.79ct Multicolor Cinnabar, Oval, Opaque

22.79ct Multicolor Cinnabar, Oval, Opaque

28.5 x 20.1 mm

$ 26.67

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1.12ct Purple Rhodolite Garnet, Oval, VVS

1.12ct Purple Rhodolite Garnet, Oval, VVS

7 x 5.4 mm

$ 39.04

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0.21ct Pink Morganite, Round, VVS-VS

0.21ct Pink Morganite, Round, VVS-VS

4.2 mm

$ 8.72

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0.17ctw White Diamond, Round, VVS-VS

0.17ctw White Diamond, Round, VVS-VS

2.8 mm (calibrated)

$ 303.91

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3.76ctw Multicolor Spectrolite, Oval, Opaque

3.76ctw Multicolor Spectrolite, Oval, Opaque

10 x 8 mm (calibrated)

$ 14.36

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3.48ct Yellow Citrine, Oval, VVS-VS

3.48ct Yellow Citrine, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 22.87

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0.66ct Yellow Morganite, Pear Shape, VS

0.66ct Yellow Morganite, Pear Shape, VS

7.8 x 5.7 mm

$ 28.93

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21.23ctw Black Spinel, Oval, Opaque

21.23ctw Black Spinel, Oval, Opaque

16 x 12 mm (calibrated)

$ 81.41

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3.89ctw Red Pyrope Garnet, Marquise, VVS-VS

3.89ctw Red Pyrope Garnet, Marquise, VVS-VS

12 x 6 mm

$ 21.31

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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.

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