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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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4.50ct Pink Kunzite, Pear Shape, VS

4.50ct Pink Kunzite, Pear Shape, VS

12.5 x 7.6 mm

$ 112.05

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1.76ct Blue Cavansite, Fancy, Opaque

1.76ct Blue Cavansite, Fancy, Opaque

8.7 x 8.2 mm

$ 10.23

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5.19ct Green Malachite, Oval, Opaque

5.19ct Green Malachite, Oval, Opaque

11.8 x 9.5 mm

$ 5.17

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36.39ct Multicolor Jasper, Cushion, Opaque

36.39ct Multicolor Jasper, Cushion, Opaque

32.6 x 22.4 mm

$ 19.94

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0.62ct Pink Morganite, Pear Shape, VVS-VS

0.62ct Pink Morganite, Pear Shape, VVS-VS

7.3 x 4.5 mm

$ 37.36

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12.29ct Red Strawberry Quartz, Oval, Translucent

12.29ct Red Strawberry Quartz, Oval, Translucent

16.3 x 13.2 mm

$ 94.25

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86.87ct Multicolor Opal, Oval, Transparent
Opal Product Video (746924)

86.87ct Multicolor Opal, Oval, Transparent

39.8 x 33.9 mm

$ 5,047.15

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2.91ct Green Prehnite, Oval, Transparent

2.91ct Green Prehnite, Oval, Transparent

9.5 x 7.1 mm

$ 15.80

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0.98ctw Green Peridot, Oval, VS

0.98ctw Green Peridot, Oval, VS

6 x 4 mm (calibrated)

$ 10.74

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1.69ct Green Prehnite, Oval, Transparent

1.69ct Green Prehnite, Oval, Transparent

8.5 x 6.1 mm

$ 5.00

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6.30ct Multicolor Fire Agate, Fancy, Opaque

6.30ct Multicolor Fire Agate, Fancy, Opaque

16.1 x 9.6 mm

$ 54.80

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0.75ct Yellow Sphene, Oval, Transparent

0.75ct Yellow Sphene, Oval, Transparent

5.4 x 5.2 mm

$ 3.74

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1.61ctw Green Peridot, Oval, VVS

1.61ctw Green Peridot, Oval, VVS

7 x 5 mm (calibrated)

$ 22.45

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3.39ctw Pink Strawberry Quartz, Oval, Transparent

3.39ctw Pink Strawberry Quartz, Oval, Transparent

9 x 7 mm (calibrated)

$ 17.89

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33.16ct White Rainbow Moonstone, Marquise, Transparent

33.16ct White Rainbow Moonstone, Marquise, Transparent

40.6 x 15.1 mm

$ 264.22

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3.02ct Green Tourmaline, Emerald Cut, VS-SI

3.02ct Green Tourmaline, Emerald Cut, VS-SI

11.4 x 6.1 mm

$ 150.40

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3.12ct Pink Morganite, Round, Transparent

3.12ct Pink Morganite, Round, Transparent

10 mm (calibrated)

$ 34.18

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3.18ctw Orange Moonstone, Cushion, Translucent

3.18ctw Orange Moonstone, Cushion, Translucent

7 x 7 mm (calibrated)

$ 6.33

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7.81ct Pink Morganite, Oval, Translucent

7.81ct Pink Morganite, Oval, Translucent

14 x 10 mm (calibrated)

$ 85.56

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1.16ct Gray Sillimanite Cat'S Eye, Oval, Transparent

1.16ct Gray Sillimanite Cat'S Eye, Oval, Transparent

6.4 x 5 mm

$ 3.47

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1.90ct Orange Hessonite Garnet, Cushion, VS-SI

1.90ct Orange Hessonite Garnet, Cushion, VS-SI

7 x 7 mm (calibrated)

$ 31.96

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30.18ctw White Howlite, Sphere / Ball, Opaque

30.18ctw White Howlite, Sphere / Ball, Opaque

13 mm (calibrated)

$ 17.19

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6.61ct Green Fluorite, Oval, Transparent

6.61ct Green Fluorite, Oval, Transparent

12 x 9.3 mm

$ 27.19

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5.77ct Yellow Citrine, Oval, VVS

5.77ct Yellow Citrine, Oval, VVS

13.9 x 10.4 mm

$ 37.93

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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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