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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
Untreated Gemstones Clarity
Untreated Gemstones Price
Untreated Gemstones Treatment

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Bi-color Untreated Gemstones
Black Untreated Gemstones
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Multicolor Untreated Gemstones
Orange Untreated Gemstones
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Yellow Untreated Gemstones
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3.10ctw White Rainbow Moonstone, Square, Transparent

3.10ctw White Rainbow Moonstone, Square, Transparent

3 x 3 mm (calibrated)

$ 57.73

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4.75ct Green Tourmaline, Fancy, Translucent
Tourmaline Product Video (472836)

4.75ct Green Tourmaline, Fancy, Translucent

20.2 x 9.8 mm

$ 52.04

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0.97ct Orange Hessonite Garnet, Oval, VVS-VS

0.97ct Orange Hessonite Garnet, Oval, VVS-VS

6.8 x 5.3 mm

$ 19.32

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3.38ct Green Prehnite, Oval, Transparent/Translucent

3.38ct Green Prehnite, Oval, Transparent/Translucent

9.6 x 8.3 mm

$ 10.00

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9.59ct Brown Cat'S Eye Opal, Oval, Translucent

9.59ct Brown Cat'S Eye Opal, Oval, Translucent

15.5 x 10.8 mm

$ 31.52

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4.75ctw Yellow Citrine, Oval, VVS-VS

4.75ctw Yellow Citrine, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 26.03

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1.61ct Green Tourmaline, Emerald Cut, VVS-VS

1.61ct Green Tourmaline, Emerald Cut, VVS-VS

6.7 x 6.6 mm

$ 187.08

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3.58ct Red Almandine Garnet, Pear Shape, VS

3.58ct Red Almandine Garnet, Pear Shape, VS

12 x 8 mm (calibrated)

$ 29.71

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0.52ct Multicolor Opal, Pear Shape, Transparent

0.52ct Multicolor Opal, Pear Shape, Transparent

8 x 5 mm (calibrated)

$ 12.95

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1.44ct Green Tourmaline, Oval, Transparent

1.44ct Green Tourmaline, Oval, Transparent

8 x 6 mm (calibrated)

$ 26.29

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3.46ct Multicolor Agate, Round, Opaque

3.46ct Multicolor Agate, Round, Opaque

8 mm (calibrated)

$ 5.86

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10.46ct Multicolor Coral, Pear Shape, Translucent

10.46ct Multicolor Coral, Pear Shape, Translucent

20 x 15 mm (calibrated)

$ 22.92

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20.43ct Black Snowflake Obsidian, Fancy, Opaque

20.43ct Black Snowflake Obsidian, Fancy, Opaque

29.6 x 15.4 mm

$ 12.00

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5.49ct Green Prehnite, Fancy, Translucent

5.49ct Green Prehnite, Fancy, Translucent

15.3 x 10.8 mm

$ 9.02

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1.58ct Green Tourmaline, Fancy, VVS
Tourmaline Product Video (715331)

1.58ct Green Tourmaline, Fancy, VVS

8.8 x 8.4 mm

$ 188.84

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1.02ctw Orange Citrine, Trillion, VVS-VS

1.02ctw Orange Citrine, Trillion, VVS-VS

6 x 6 mm (calibrated)

$ 8.47

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1.73ct Yellow Sillimanite, Oval, VVS-VS
Sillimanite Product Video (411763)

1.73ct Yellow Sillimanite, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 66.34

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2.41ct Orange Hessonite Garnet, Cushion, SI

2.41ct Orange Hessonite Garnet, Cushion, SI

7 x 7 mm (calibrated)

$ 44.89

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3.34ct Yellow Citrine, Oval, VVS-VS

3.34ct Yellow Citrine, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 23.29

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4.61ctw Yellow Citrine, Oval, VS

4.61ctw Yellow Citrine, Oval, VS

10 x 8 mm (calibrated)

$ 25.26

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3.99ct Multicolor Fire Agate, Fancy, Opaque

3.99ct Multicolor Fire Agate, Fancy, Opaque

12.9 x 7.6 mm

$ 30.79

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0.98ct Pink Malaya Garnet, Round, VS

0.98ct Pink Malaya Garnet, Round, VS

6 mm (calibrated)

$ 42.94

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9.20ct Yellow Citrine, Briolette, VVS

9.20ct Yellow Citrine, Briolette, VVS

15 x 10 mm (calibrated)

$ 52.32

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0.65ct Green Peridot, Marquise, VS

0.65ct Green Peridot, Marquise, VS

8 x 4 mm (calibrated)

$ 9.71

View Gem
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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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All these questions, and I don't have to give any blood. What a Deal... I absolutely enjoy the Gem Select emails every month. This one today was special. I always say, I'll know it when I see it. This stone today was the One. Odd and Intriguing. Thank You So Much for all that you do.

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