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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
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Untreated Gemstones Treatment

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0.85ct Green Sphene, Oval, Opaque

0.85ct Green Sphene, Oval, Opaque

7 x 4.8 mm

$ 26.08

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2.63ct Yellow Citrine, Oval, VVS-VS

2.63ct Yellow Citrine, Oval, VVS-VS

11 x 8.4 mm

$ 20.17

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2.58ct Violet Amethyst, Trillion, VVS-VS

2.58ct Violet Amethyst, Trillion, VVS-VS

10 x 10 mm (calibrated)

$ 17.99

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2.26ct Multicolor Spectrolite, Oval, Opaque

2.26ct Multicolor Spectrolite, Oval, Opaque

10 x 8 mm (calibrated)

$ 10.65

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0.62ct Green Peridot, Marquise, VS

0.62ct Green Peridot, Marquise, VS

8 x 4 mm (calibrated)

$ 9.26

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1.48ct Yellow Beryl, Round, VVS

1.48ct Yellow Beryl, Round, VVS

8 mm (calibrated)

$ 29.48

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23.03ctw Multicolor Fossil Coral, Cushion, Opaque

23.03ctw Multicolor Fossil Coral, Cushion, Opaque

18.5 x 10.9 mm

$ 29.78

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4.95ctw Yellow Citrine, Oval, VVS-VS

4.95ctw Yellow Citrine, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 27.12

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1.68ct Yellow Citrine, Square, VS

1.68ct Yellow Citrine, Square, VS

7 x 7 mm (calibrated)

$ 11.67

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1.06ct Green Peridot, Emerald Cut, VVS-VS

1.06ct Green Peridot, Emerald Cut, VVS-VS

7 x 5 mm (calibrated)

$ 15.84

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3.28ct Multicolor Opal, Oval, Translucent

3.28ct Multicolor Opal, Oval, Translucent

15.2 x 8.9 mm

$ 81.67

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4.03ctw Red Pyrope Garnet, Square, VS

4.03ctw Red Pyrope Garnet, Square, VS

4 x 4 mm (calibrated)

$ 30.91

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1.05ct Yellow Citrine, Round, VVS-VS

1.05ct Yellow Citrine, Round, VVS-VS

7 mm (calibrated)

$ 8.37

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1.59ct Green Sphene, Oval, Transparent

1.59ct Green Sphene, Oval, Transparent

8 x 6 mm (calibrated)

$ 7.92

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9.04ctw Green Prehnite, Fancy, Translucent

9.04ctw Green Prehnite, Fancy, Translucent

15 x 10 mm (calibrated)

$ 14.86

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2.40ct Green Prehnite, Oval, Transparent/Translucent

2.40ct Green Prehnite, Oval, Transparent/Translucent

9.2 x 7.9 mm

$ 7.10

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21.82ct Violet Amethyst, Emerald Cut, VVS

21.82ct Violet Amethyst, Emerald Cut, VVS

20 x 15 mm (calibrated)

$ 152.13

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1.00ctw Red Pyrope Garnet, Square, VVS-VS

1.00ctw Red Pyrope Garnet, Square, VVS-VS

4.2 x 4.2 mm

$ 7.67

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2.30ct Green Peridot, Cushion, VS

2.30ct Green Peridot, Cushion, VS

9 x 7 mm (calibrated)

$ 91.14

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35.03ct Multicolor Jasper, Oval, Opaque

35.03ct Multicolor Jasper, Oval, Opaque

31.4 x 20.3 mm

$ 28.02

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12.98ct Violet Amethyst, Cushion, VVS
Amethyst Product Video (715754)

12.98ct Violet Amethyst, Cushion, VVS

18 x 13 mm (calibrated)

$ 103.43

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8.08ct Multicolor Amethyst Geode Slice, Fancy, Transparent

8.08ct Multicolor Amethyst Geode Slice, Fancy, Transparent

18 x 13 mm (calibrated)

$ 8.62

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11.45ct Blue Color-Change Fluorite, Round, VS
Color-Change Fluorite Product Video (413715)

11.45ct Blue Color-Change Fluorite, Round, VS

14 mm (calibrated)

$ 313.62

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0.53ct Green Peridot, Baguette, VVS-VS

0.53ct Green Peridot, Baguette, VVS-VS

5.9 x 3.8 mm

$ 7.92

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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!

Overall Rating -> 10 star ratings

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

Posted By Darkstar731 in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Easy to use. No issues. Large selection of gems.

Posted By CLTCJH in February, 2026
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Overall Rating -> 9 star ratings

Fast and reliable service.

Posted By Zæck in December, 2025
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Overall Rating -> 9 star ratings

Very easy to navigate with a great selection.

Posted By Bar181 in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

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

Posted By Zorah in February, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

The purchasing process is fairly quick and straightforward and for me user friendly so it probably took more or less than 3 minutes to purchase and pay for the items. I wish there was a discount offer for multiple items to encourage us buyers to purchase more an incentive and add more sales in your end. Besides that, it's been a great purchasing experience and will continue to shop as I am a repeat customer and have bought from your store many times before. Thank you.

Posted By Emmanuel in October, 2025
Source: Bizrate
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