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Untreated Gemstones

Browse our selection of untreated gemstones featuring natural color, clarity and beauty without enhancements.

Untreated Gemstones Weight
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9.12ct Black Tourmaline, Oval, Opaque

9.12ct Black Tourmaline, Oval, Opaque

14 x 12 mm (calibrated)

$ 45.42

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1.45ct Green Peridot, Oval, VS

1.45ct Green Peridot, Oval, VS

8 x 6 mm (calibrated)

$ 22.24

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11.95ct Yellow Citrine, Baguette, VS
Citrine Product Video (751379)

11.95ct Yellow Citrine, Baguette, VS

15.5 x 11.6 mm

$ 79.35

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13.23ct Green Serpentine, Oval, Translucent

13.23ct Green Serpentine, Oval, Translucent

24.2 x 15.2 mm

$ 28.33

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2.10ct Violet Amethyst, Trillion, VS

2.10ct Violet Amethyst, Trillion, VS

9 x 9 mm (calibrated)

$ 16.10

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1.89ctw Green Peridot, Emerald Cut, VVS-VS

1.89ctw Green Peridot, Emerald Cut, VVS-VS

6 x 4 mm (calibrated)

$ 51.78

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22.88ct Pink Rose Quartz, Oval, Transparent

22.88ct Pink Rose Quartz, Oval, Transparent

20 x 15 mm (calibrated)

$ 30.09

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1.37ct Yellow Color-Change Diaspore, Baguette, VVS-VS

1.37ct Yellow Color-Change Diaspore, Baguette, VVS-VS

9.7 x 4.7 mm

$ 65.64

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7.58ct Black Tourmaline, Oval, Opaque

7.58ct Black Tourmaline, Oval, Opaque

12.6 x 10.6 mm

$ 37.75

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0.84ct Green Peridot, Oval, VS

0.84ct Green Peridot, Oval, VS

7 x 5 mm (calibrated)

$ 5.86

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1.36ct Yellow Beryl, Trillion, VS

1.36ct Yellow Beryl, Trillion, VS

8 x 8 mm (calibrated)

$ 32.51

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3.36ct Pink Morganite, Round, Translucent

3.36ct Pink Morganite, Round, Translucent

9 mm (calibrated)

$ 36.45

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0.79ct Orange Hessonite Garnet, Pear Shape, SI

0.79ct Orange Hessonite Garnet, Pear Shape, SI

6.9 x 4.8 mm

$ 13.49

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14.90ct Multicolor Bloodstone, Oval, Opaque

14.90ct Multicolor Bloodstone, Oval, Opaque

15.6 x 12.6 mm

$ 29.68

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1.70ct Green Tourmaline, Emerald Cut, VS-SI

1.70ct Green Tourmaline, Emerald Cut, VS-SI

21.1 x 3.3 mm

$ 46.56

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4.60ct Black Star Diopside, Oval, Opaque

4.60ct Black Star Diopside, Oval, Opaque

11 x 9 mm (calibrated)

$ 22.91

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2.03ctw Blue Kyanite, Oval, SI

2.03ctw Blue Kyanite, Oval, SI

7 x 5 mm (calibrated)

$ 42.26

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9.86ct Multicolor Agate, Oval, Opaque

9.86ct Multicolor Agate, Oval, Opaque

13.8 x 12.7 mm

$ 16.69

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14.40ct Multicolor Boulder Opal, Cushion, Translucent
Boulder Opal Product Video (634615)

14.40ct Multicolor Boulder Opal, Cushion, Translucent

18.4 x 16.2 mm

$ 100.40

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1.38ct Green Tourmaline, Cushion, VS

1.38ct Green Tourmaline, Cushion, VS

8 x 6 mm (calibrated)

$ 160.36

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1.11ct Orange Hessonite Garnet, Oval, VVS-VS

1.11ct Orange Hessonite Garnet, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 21.01

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1.53ct Yellow Beryl, Oval, VVS

1.53ct Yellow Beryl, Oval, VVS

9 x 7 mm (calibrated)

$ 30.48

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1.18ct Yellow Color-Change Diaspore, Emerald Cut, VS

1.18ct Yellow Color-Change Diaspore, Emerald Cut, VS

7.3 x 5.1 mm

$ 48.14

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2.89ct Violet Amethyst, Trillion, VS

2.89ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 20.15

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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!

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Overall Rating -> 10 star ratings

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