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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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4.76ct Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 28.58

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1.23ct Brown Color-Change Garnet, Pear Shape, VVS-VS

7.3 x 5.4 mm

$ 98.26

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1.60ct Orange Citrine, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 15.94

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17.46ct Multicolor Agate, Oval, Opaque

16.3 x 14.7 mm

$ 17.39

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19.16ct Blue Turquoise, Oval, Opaque

23.8 x 13 mm

$ 57.25

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4.40ct Violet Amethyst, Pear Shape, Transparent

14 x 9 mm (calibrated)

$ 26.29

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37.71ct Green Malachite, Oval, Opaque

30.5 x 20.3 mm

$ 37.56

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0.18ct Brown Diamond, Round, VVS-VS

3.5 mm (calibrated)

$ 298.73

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3.08ct Green Tourmaline, Emerald Cut, VS-SI

25.7 x 3.8 mm

$ 138.05

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3.29ct Purple Kunzite, Emerald Cut, VVS-VS

8.1 x 6.4 mm

$ 81.92

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1.44ctw Yellow Citrine, Pear Shape, VVS-VS

7 x 5 mm (calibrated)

$ 9.46

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2.79ctw Green Tsavorite Garnet, Square, VVS-VS

2.4 x 2.4 mm

$ 259.82

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16.19ct Pink Rose Quartz, Oval, Transparent

20 x 14.2 mm

$ 35.47

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2.73ct Green Prehnite, Oval, Transparent/Translucent

8.6 x 7.1 mm

$ 17.45

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2.57ct Orange Hessonite Garnet, Emerald Cut, VS-SI

7.4 x 7.4 mm

$ 50.69

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5.37ctw Brown Moonstone, Flower Cut, Translucent

7.6 x 7.4 mm

$ 23.54

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9.43ctw Yellow Citrine, Oval, Transparent

10 x 8 mm (calibrated)

$ 56.82

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0.39ct White Rainbow Moonstone, Baguette, Transparent

5.8 x 3.8 mm

$ 13.60

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1.65ct Green Tourmaline, Oval, VVS-VS

7.5 x 6.7 mm

$ 230.08

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15.68ct Black Obsidian, Trillion, Opaque

25 x 21 mm

$ 25.76

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8.66ct Green Maw-Sit-Sit, Pear Shape, Opaque

16.1 x 12.6 mm

$ 26.75

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1.51ct Green Tourmaline, Oval, VVS-VS

8.5 x 7.1 mm

$ 175.46

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14.50ct Multicolor Jasper, Pear Shape, Opaque

36.3 x 15.4 mm

$ 23.84

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44.63ct Yellow Calcite, Pear Shape, Translucent

36.5 x 22.8 mm

$ 30.67

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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

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I found the filter options excellent. Yours was the third site I visited (asked chat got for reputable online sellers of loose gems) and the first I purchased from as I was able to easily find what I was looking for.

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