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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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3.14ct Yellow Citrine, Oval, VVS-VS

3.14ct Yellow Citrine, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 17.20

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15.83ctw Brown Tiger'S Eye, Baguette, Opaque

15.83ctw Brown Tiger'S Eye, Baguette, Opaque

14.3 x 10.5 mm

$ 15.77

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1.65ct Orange Citrine, Oval, VS

1.65ct Orange Citrine, Oval, VS

9 x 7 mm (calibrated)

$ 16.43

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2.77ct Brown Smoky Quartz, Marquise, VVS

2.77ct Brown Smoky Quartz, Marquise, VVS

18 x 7 mm

$ 16.55

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1.24ct Green Tourmaline, Emerald Cut, VS

1.24ct Green Tourmaline, Emerald Cut, VS

14.5 x 3.4 mm

$ 29.89

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1.15ctw Red Pyrope Garnet, Heart, VVS-VS

1.15ctw Red Pyrope Garnet, Heart, VVS-VS

5 x 5 mm (calibrated)

$ 9.16

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4.19ct Yellow Citrine, Oval, VVS-VS

4.19ct Yellow Citrine, Oval, VVS-VS

12 x 10 mm (calibrated)

$ 33.38

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1.64ct Orange Hessonite Garnet, Oval, VS

1.64ct Orange Hessonite Garnet, Oval, VS

7.8 x 6.3 mm

$ 25.06

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0.91ct Green Tourmaline, Emerald Cut, VVS

0.91ct Green Tourmaline, Emerald Cut, VVS

7.7 x 4.4 mm

$ 22.66

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27.90ct Green Malachite, Oval, Opaque

27.90ct Green Malachite, Oval, Opaque

23.3 x 17.2 mm

$ 21.40

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8.01ct Multicolor Boulder Opal, Cushion, Opaque

8.01ct Multicolor Boulder Opal, Cushion, Opaque

15.6 x 8.8 mm

$ 55.84

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2.34ct Multicolor Opal, Oval, Transparent

2.34ct Multicolor Opal, Oval, Transparent

10 x 8 mm (calibrated)

$ 49.04

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0.64ct Green Tourmaline, Round, Transparent

0.64ct Green Tourmaline, Round, Transparent

5 mm (calibrated)

$ 12.75

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0.63ct Yellow Color-Change Diaspore, Square, VS

0.63ct Yellow Color-Change Diaspore, Square, VS

4.7 x 4.6 mm

$ 23.41

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1.50ct Orange Hessonite Garnet, Emerald Cut, VVS-VS

1.50ct Orange Hessonite Garnet, Emerald Cut, VVS-VS

7 x 5 mm (calibrated)

$ 22.31

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40.24ct Multicolor Jasper, Cushion, Opaque

40.24ct Multicolor Jasper, Cushion, Opaque

27.6 x 26.4 mm

$ 66.13

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2.36ctw Orange Hessonite Garnet, Round, VS-SI

2.36ctw Orange Hessonite Garnet, Round, VS-SI

6 mm (calibrated)

$ 38.24

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4.80ct Yellow Citrine, Oval, VS
Citrine Product Video (635568)

4.80ct Yellow Citrine, Oval, VS

14 x 10 mm (calibrated)

$ 33.47

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50.09ct Violet Charoite, Cushion, Opaque

50.09ct Violet Charoite, Cushion, Opaque

29.6 x 25.6 mm

$ 82.32

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0.99ct Green Tourmaline, Emerald Cut, VS

0.99ct Green Tourmaline, Emerald Cut, VS

16 x 3.3 mm

$ 26.04

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3.01ctw Red Pyrope Garnet, Emerald Cut, VS

3.01ctw Red Pyrope Garnet, Emerald Cut, VS

6 x 4 mm (calibrated)

$ 23.09

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22.99ct Black Obsidian, Oval, Opaque

22.99ct Black Obsidian, Oval, Opaque

28.6 x 19.4 mm

$ 17.17

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10.99ct Green Uvarovite Garnet Drusy, Fancy, Opaque

10.99ct Green Uvarovite Garnet Drusy, Fancy, Opaque

18 x 13 mm (calibrated)

$ 16.43

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3.42ctw Brown Smoky Quartz, Round, VS

3.42ctw Brown Smoky Quartz, Round, VS

8 mm (calibrated)

$ 7.49

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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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It was good. There was a large selection at prices I could afford.

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I was able to find what I've been looking for.

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Absolutely love the website, selection and products. Can you guys add a gemstones with inclusions tab. I like those it'd be nice to have them all in one place but i do understand it would be alot of work to go through and categorize them. Thank you anyways

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I can pick and choose from large selection and find just what I need for .y projects, currently my cane.

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I had a very easy time navigating the web page and using filters to find what I was looking for. The varied selection was nice to see and pricing is clear and fair.

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