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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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Multicolor Untreated Gemstones
Orange Untreated Gemstones
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Yellow Untreated Gemstones
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4.08ct Yellow Citrine, Oval, VS

4.08ct Yellow Citrine, Oval, VS

12 x 10 mm (calibrated)

$ 22.35

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9.74ct Pink Rose Quartz, Emerald Cut, Transparent

9.74ct Pink Rose Quartz, Emerald Cut, Transparent

13 x 13 mm (calibrated)

$ 53.35

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3.20ct Pink Morganite, Oval, Transparent

3.20ct Pink Morganite, Oval, Transparent

10.9 x 8.1 mm

$ 35.06

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0.50ct Multicolor Labradorite, Pear Shape, Translucent

0.50ct Multicolor Labradorite, Pear Shape, Translucent

6.3 x 4.1 mm

$ 1.10

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3.60ct Green Chrysoprase, Oval, Opaque

3.60ct Green Chrysoprase, Oval, Opaque

12.5 x 7.5 mm

$ 29.88

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0.79ct Yellow Citrine, Marquise, VS

0.79ct Yellow Citrine, Marquise, VS

9.1 x 4.9 mm

$ 6.29

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34.98ct Multicolor Jasper, Pear Shape, Opaque

34.98ct Multicolor Jasper, Pear Shape, Opaque

30 x 22 mm (calibrated)

$ 38.33

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1.76ct Orange Zircon, Round, VVS-VS

1.76ct Orange Zircon, Round, VVS-VS

7 mm (calibrated)

$ 32.14

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3.47ct Brown Rutile Topaz, Pear Shape, Transparent

3.47ct Brown Rutile Topaz, Pear Shape, Transparent

12.6 x 7.5 mm

$ 72.00

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4.57ct Yellow Citrine, Oval, VS

4.57ct Yellow Citrine, Oval, VS

12 x 10 mm (calibrated)

$ 25.04

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5.92ct Orange Sunstone, Round, Translucent

5.92ct Orange Sunstone, Round, Translucent

12 mm (calibrated)

$ 36.12

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7.09ctw Orange Sunstone, Round, Transparent

7.09ctw Orange Sunstone, Round, Transparent

10 mm (calibrated)

$ 41.33

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0.68ct Purple Spinel, Oval, VVS-VS

0.68ct Purple Spinel, Oval, VVS-VS

5.7 x 4.5 mm

$ 56.44

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2.08ct Orange Hessonite Garnet, Oval, VVS-VS

2.08ct Orange Hessonite Garnet, Oval, VVS-VS

8.6 x 7 mm

$ 41.43

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2.40ct Orange Sunstone, Oval, Transparent

2.40ct Orange Sunstone, Oval, Transparent

10 x 8.5 mm

$ 17.59

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21.86ct Brown Moonstone, Oval, Opaque

21.86ct Brown Moonstone, Oval, Opaque

20 x 15 mm (calibrated)

$ 35.92

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2.35ctw Yellow Beryl, Oval, VVS-VS

2.35ctw Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 46.81

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1.81ct Green Sphene, Oval, Transparent

1.81ct Green Sphene, Oval, Transparent

8 x 6 mm (calibrated)

$ 9.01

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0.86ct Pink Tourmaline, Oval, Transparent

0.86ct Pink Tourmaline, Oval, Transparent

6.5 x 5.3 mm

$ 14.25

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7.16ct Yellow Citrine, Briolette, VVS-VS

7.16ct Yellow Citrine, Briolette, VVS-VS

15.7 x 9 mm

$ 40.40

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1.45ct Pink Tourmaline, Emerald Cut, VS

1.45ct Pink Tourmaline, Emerald Cut, VS

12.2 x 4.1 mm

$ 91.35

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1.04ct Yellow Diamond, Fancy, SI
Diamond Product Video (382118)

1.04ct Yellow Diamond, Fancy, SI

6.4 x 5.1 mm

$ 2,208.32

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0.16ctw White Diamond, Round, VVS-VS

0.16ctw White Diamond, Round, VVS-VS

2.9 mm (calibrated)

$ 290.69

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5.82ct Multicolor Fire Agate, Fancy, Translucent

5.82ct Multicolor Fire Agate, Fancy, Translucent

15.5 x 10.4 mm

$ 41.72

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

GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!

Overall Rating -> 9 star ratings

I did not realize these stones were of jewelry quality. They are really beautiful, just not what I was expecting which was more of a natural stone.

Posted By Jewelry Quality Stones in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Excellent options

Posted By CJ in February, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

The website was easy to use and there were a lot of good options, I was satisfied.

Posted By Brielly in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Found a beautiful opal at a great price. I was not disappointed when it arrived. Even better in person.

Posted By Fried Rice in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

the selection is good as are the prices

Posted By Old man in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I purchased from you before and I have never been disappointed. I always received what I expected and your products are very nice.

Posted By MVK in July, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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