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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
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Orange Untreated Gemstones
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Yellow Untreated Gemstones
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3.22ctw Yellow Golden Beryl, Oval, VVS-VS

3.22ctw Yellow Golden Beryl, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 70.56

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21.11ct Gray Jadeite, Oval, Translucent

21.11ct Gray Jadeite, Oval, Translucent

23.5 x 17.6 mm

$ 34.69

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1.02ct Multicolor Chocolate Opal, Oval, Transparent

1.02ct Multicolor Chocolate Opal, Oval, Transparent

8 x 6 mm (calibrated)

$ 30.48

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1.07ct Yellow Golden Beryl, Oval, VS

1.07ct Yellow Golden Beryl, Oval, VS

8.2 x 6.3 mm

$ 29.32

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21.22ctw Black Spinel, Oval, Opaque

21.22ctw Black Spinel, Oval, Opaque

16 x 12 mm (calibrated)

$ 69.75

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1.95ctw Multicolor Opal, Oval, Transparent

1.95ctw Multicolor Opal, Oval, Transparent

7 x 5 mm (calibrated)

$ 85.46

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7.08ct Pink Strawberry Quartz, Oval, Translucent

7.08ct Pink Strawberry Quartz, Oval, Translucent

12 x 10 mm (calibrated)

$ 42.51

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0.81ct Orange Sphalerite, Round, SI

0.81ct Orange Sphalerite, Round, SI

5 mm (calibrated)

$ 40.34

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1.11ct Purple Spinel, Cushion, VVS-VS

1.11ct Purple Spinel, Cushion, VVS-VS

6.3 x 5.5 mm

$ 39.69

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18.56ctw Green Amazonite, Marquise, Opaque

18.56ctw Green Amazonite, Marquise, Opaque

20 x 10.2 mm

$ 14.78

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0.91ctw Red Pyrope Garnet, Square, VS

0.91ctw Red Pyrope Garnet, Square, VS

4 x 4 mm (calibrated)

$ 6.98

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4.24ct Brown Tiger'S Eye, Round, Opaque

4.24ct Brown Tiger'S Eye, Round, Opaque

10 mm (calibrated)

$ 4.22

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7.69ct Brown Smoky Quartz, Round, VVS-VS

7.69ct Brown Smoky Quartz, Round, VVS-VS

13 mm (calibrated)

$ 12.64

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1.15ct Yellow Citrine, Cushion, VVS

1.15ct Yellow Citrine, Cushion, VVS

8 x 6 mm (calibrated)

$ 8.59

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3.85ct Yellow Citrine, Emerald Cut, VVS

3.85ct Yellow Citrine, Emerald Cut, VVS

11 x 9 mm (calibrated)

$ 29.53

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6.01ct Multicolor Labradorite, Pear Shape, Translucent

6.01ct Multicolor Labradorite, Pear Shape, Translucent

15.8 x 9.9 mm

$ 13.29

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12.01ct Yellow Jadeite, Oval, Translucent

12.01ct Yellow Jadeite, Oval, Translucent

18 x 13 mm (calibrated)

$ 39.47

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0.44ct Yellow Citrine, Oval, VVS-VS

0.44ct Yellow Citrine, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 3.07

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0.85ct Brown Sillimanite Cat'S Eye, Oval, Translucent

0.85ct Brown Sillimanite Cat'S Eye, Oval, Translucent

6.4 x 4.6 mm

$ 2.54

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0.59ct Green Cat'S Eye Alexandrite, Oval, Opaque

0.59ct Green Cat'S Eye Alexandrite, Oval, Opaque

5.2 x 3.6 mm

$ 97.94

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1.49ct Yellow Citrine, Emerald Cut, VVS-VS

1.49ct Yellow Citrine, Emerald Cut, VVS-VS

8 x 6 mm (calibrated)

$ 11.87

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1.94ct Green Sphene, Oval, Transparent

1.94ct Green Sphene, Oval, Transparent

8.5 x 6.8 mm

$ 9.66

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13.70ct Multicolor Pietersite, Pear Shape, Opaque

13.70ct Multicolor Pietersite, Pear Shape, Opaque

27.1 x 15.3 mm

$ 60.04

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1.14ct Yellow Beryl, Oval, VVS-VS

1.14ct Yellow Beryl, Oval, VVS-VS

8.2 x 6.3 mm

$ 24.98

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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've purchased from here many times over the last decade+. I find the information easy to understand, helpful, and interesting. I have always been satisfied that I got exactly what I ordered. Pictures and descriptions are clear and unique to each stone.

Posted By Maggie in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I was able to find what I wanted very easily!

Posted By Lenny in January, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

The website was easy to use and informative of the selection of stones it has. I quickly found the right stone for me.

Posted By Guero in March, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

It was fine

Posted By Na in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

So far So good

Posted By VH-1 in July, 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
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