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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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30.17ct Multicolor Jasper, Oval, Opaque

30.17ct Multicolor Jasper, Oval, Opaque

27.9 x 21.5 mm

$ 33.06

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3.41ct Multicolor Pietersite, Marquise, Translucent

3.41ct Multicolor Pietersite, Marquise, Translucent

16.6 x 6.7 mm

$ 10.19

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9.89ct Red Star Garnet, Oval, Opaque

9.89ct Red Star Garnet, Oval, Opaque

12.4 x 9.4 mm

$ 10.25

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1.38ct Yellow Color-Change Diaspore, Cushion, VS

1.38ct Yellow Color-Change Diaspore, Cushion, VS

8 x 5 mm (calibrated)

$ 48.39

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2.87ct Green Tourmaline, Emerald Cut, VVS-VS

2.87ct Green Tourmaline, Emerald Cut, VVS-VS

18.5 x 4.3 mm

$ 78.62

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3.85ctw Red Pyrope Garnet, Square, VS

3.85ctw Red Pyrope Garnet, Square, VS

4 x 4 mm (calibrated)

$ 29.53

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0.27ct Orange Spessartite Garnet, Oval, VS

0.27ct Orange Spessartite Garnet, Oval, VS

4.1 x 3.1 mm

$ 9.41

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0.61ct Green Cat'S Eye Alexandrite, Oval, Opaque

0.61ct Green Cat'S Eye Alexandrite, Oval, Opaque

5.5 x 4 mm

$ 126.58

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23.31ct Multicolor Labradorite, Oval, Opaque

23.31ct Multicolor Labradorite, Oval, Opaque

24.6 x 19.3 mm

$ 20.90

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1.62ctw Red Rhodolite Garnet, Square, VS

1.62ctw Red Rhodolite Garnet, Square, VS

5 x 5 mm (calibrated)

$ 14.18

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5.44ct Violet Amethyst, Pear Shape, Transparent

5.44ct Violet Amethyst, Pear Shape, Transparent

13.6 x 10 mm

$ 32.51

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1.55ct Yellow Citrine, Emerald Cut, VVS

1.55ct Yellow Citrine, Emerald Cut, VVS

8 x 6 mm (calibrated)

$ 12.35

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22.28ctw Multicolor Fossil Coral, Oval, Opaque

22.28ctw Multicolor Fossil Coral, Oval, Opaque

20.7 x 11.4 mm

$ 28.80

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19.63ct Brown Tiger'S Eye, Oval, Opaque

19.63ct Brown Tiger'S Eye, Oval, Opaque

24.7 x 16.6 mm

$ 43.02

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22.23ct Bi-Color Ametrine, Oval, VS

22.23ct Bi-Color Ametrine, Oval, VS

18.3 x 14.9 mm

$ 154.99

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2.50ct Yellow Citrine, Baguette, VS

2.50ct Yellow Citrine, Baguette, VS

11.8 x 5.9 mm

$ 19.17

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0.61ct Green Tourmaline, Emerald Cut, VVS-VS

0.61ct Green Tourmaline, Emerald Cut, VVS-VS

5 x 4.3 mm

$ 30.38

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2.51ct Red Almandine Garnet, Pear Shape, VS

2.51ct Red Almandine Garnet, Pear Shape, VS

12 x 8 mm (calibrated)

$ 20.83

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2.60ct Violet Amethyst, Trillion, VVS-VS

2.60ct Violet Amethyst, Trillion, VVS-VS

10 x 10 mm (calibrated)

$ 18.13

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17.39ct Red Star Garnet, Oval, Opaque

17.39ct Red Star Garnet, Oval, Opaque

17.5 x 12.2 mm

$ 17.15

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5.16ctw Red Pyrope Garnet, Pear Shape, VS

5.16ctw Red Pyrope Garnet, Pear Shape, VS

7 x 5 mm (calibrated)

$ 39.57

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10.07ct Green Prehnite, Fancy, Transparent

10.07ct Green Prehnite, Fancy, Transparent

19.4 x 12.9 mm

$ 12.74

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1.46ct Multicolor Opal, Oval, Transparent

1.46ct Multicolor Opal, Oval, Transparent

10 x 7 mm (calibrated)

$ 36.35

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0.48ct Orange Spessartite Garnet, Oval, VS

0.48ct Orange Spessartite Garnet, Oval, VS

5 x 4 mm (calibrated)

$ 16.73

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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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Have made 2 purchases so far from GemSelect and they have been amazing! Anytime I requested additional info, videos or pictures of a particular item, the response was always timely and helpful. This is a great place to buy, if you are looking for loose stones. Highly recommend!

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