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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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3.25ctw Orange Zircon, Emerald Cut, VS

3.25ctw Orange Zircon, Emerald Cut, VS

7 x 5 mm (calibrated)

$ 53.42

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6.96ct Multicolor Labradorite, Pear Shape, Translucent

6.96ct Multicolor Labradorite, Pear Shape, Translucent

14 x 10 mm (calibrated)

$ 15.39

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20.29ct Green Bloodstone, Pear Shape, Opaque

20.29ct Green Bloodstone, Pear Shape, Opaque

33.2 x 19.2 mm

$ 9.10

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2.29ct Multicolor Spectrolite, Oval, Opaque

2.29ct Multicolor Spectrolite, Oval, Opaque

10 x 8 mm (calibrated)

$ 11.84

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4.67ct Blue Aquamarine, Cushion, Translucent

4.67ct Blue Aquamarine, Cushion, Translucent

13.5 x 9 mm

$ 96.90

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6.03ct White Topaz, Cushion, VS

6.03ct White Topaz, Cushion, VS

12 x 10 mm (calibrated)

$ 40.04

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1.59ct Yellow Citrine, Oval, Transparent

1.59ct Yellow Citrine, Oval, Transparent

10 x 8 mm (calibrated)

$ 12.19

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5.71ct Yellow Citrine, Oval, VVS-VS

5.71ct Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 34.28

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6.61ct Green Malachite, Oval, Opaque

6.61ct Green Malachite, Oval, Opaque

14 x 10 mm (calibrated)

$ 7.24

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3.04ctw Yellow Beryl, Oval, VVS

3.04ctw Yellow Beryl, Oval, VVS

9 x 7 mm (calibrated)

$ 72.67

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2.25ct Orange Coral, Oval, Opaque
Coral Product Video (499214)

2.25ct Orange Coral, Oval, Opaque

12.2 x 4.9 mm

$ 336.15

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2.10ct Pink Strawberry Quartz, Oval, Transparent

2.10ct Pink Strawberry Quartz, Oval, Transparent

10 x 8 mm (calibrated)

$ 15.60

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1.20ct Brown Color-Change Garnet, Oval, VVS

1.20ct Brown Color-Change Garnet, Oval, VVS

6 x 5.1 mm

$ 95.87

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1.38ct Multicolor Opal, Oval, Transparent

1.38ct Multicolor Opal, Oval, Transparent

9 x 7 mm (calibrated)

$ 34.50

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0.59ct Yellow Citrine, Trillion, VVS-VS

0.59ct Yellow Citrine, Trillion, VVS-VS

6 x 6 mm (calibrated)

$ 4.90

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5.40ct Green Druzy Variscite, Fancy, Opaque

5.40ct Green Druzy Variscite, Fancy, Opaque

22.9 x 10.5 mm

$ 5.54

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2.81ctw Orange Moonstone, Round, Transparent

2.81ctw Orange Moonstone, Round, Transparent

7.5 mm (calibrated)

$ 6.16

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5.31ct Multicolor Fire Agate, Fancy, Opaque

5.31ct Multicolor Fire Agate, Fancy, Opaque

14.2 x 10 mm

$ 40.83

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2.00ctw White Sillimanite Cat'S Eye, Oval, Transparent

2.00ctw White Sillimanite Cat'S Eye, Oval, Transparent

7.3 x 5 mm

$ 6.57

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8.62ctw White Topaz, Heart, VS

8.62ctw White Topaz, Heart, VS

10 x 10 mm (calibrated)

$ 71.55

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0.73ct Yellow Citrine, Heart, Transparent

0.73ct Yellow Citrine, Heart, Transparent

6 x 6 mm (calibrated)

$ 5.09

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2.17ctw Yellow Citrine, Square, VVS-VS

2.17ctw Yellow Citrine, Square, VVS-VS

6 x 6 mm (calibrated)

$ 14.99

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3.01ct Violet Amethyst, Fancy, VVS

3.01ct Violet Amethyst, Fancy, VVS

9.5 x 9.3 mm

$ 23.99

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2.65ct Green Tourmaline, Emerald Cut, VVS

2.65ct Green Tourmaline, Emerald Cut, VVS

23.8 x 3.7 mm

$ 101.63

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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

My experience was done with ease

Posted By Barb in October, 2025
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Overall Rating -> 9 star ratings

Will know more once order received

Posted By Jim in September, 2025
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Overall Rating -> 10 star ratings

GemSelect offers excellent choices, prices & service- highly recommended! Unfortunately, prior to ordering a replacement gemstone, my jeweler neglected to mention it needed to be one that was a'cushion cuta' to fit the existing mount. Have yet to return/exchangea'

Posted By CJ in March, 2026
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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.

Posted By Mattick in May, 2026
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Overall Rating -> 10 star ratings

No problems. I had a minor address issue in the past and someone got back to me very quickly and we resolved the issue satisfactorily. I appreciated the quick, concerned response. So important when buyer/seller are so far apart in distance. Thank you Gem Select. Keep up the good work!

Posted By Orphanboy in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Filters need to be improved but rest of website is great

Posted By Rock hound in December, 2025
Source: Bizrate
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