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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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Untreated Gemstones Treatment

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4.46ct Yellow Citrine, Emerald Cut, VVS

4.46ct Yellow Citrine, Emerald Cut, VVS

11 x 9 mm (calibrated)

$ 34.20

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1.86ct Pink Morganite, Oval, VS

1.86ct Pink Morganite, Oval, VS

9 x 7 mm (calibrated)

$ 142.64

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9.85ct Multicolor Jasper, Cushion, Opaque

9.85ct Multicolor Jasper, Cushion, Opaque

16.5 x 12.7 mm

$ 10.80

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28.48ct Multicolor Bloodstone, Oval, Opaque

28.48ct Multicolor Bloodstone, Oval, Opaque

18.2 x 15.6 mm

$ 57.98

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0.89ctw Green Peridot, Oval, Transparent

0.89ctw Green Peridot, Oval, Transparent

6.1 x 4.2 mm

$ 15.95

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0.69ct Orange Zircon, Oval, VVS-VS

0.69ct Orange Zircon, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 17.18

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0.73ct White Rainbow Moonstone, Pear Shape, Transparent

0.73ct White Rainbow Moonstone, Pear Shape, Transparent

7 x 5 mm (calibrated)

$ 13.09

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2.18ct Red Almandine Garnet, Oval, VVS-VS

2.18ct Red Almandine Garnet, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 81.42

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1.58ctw Multicolor Andalusite, Oval, VS

1.58ctw Multicolor Andalusite, Oval, VS

5 x 3 mm (calibrated)

$ 84.40

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0.42ct Yellow Citrine, Heart, VS

0.42ct Yellow Citrine, Heart, VS

5 x 5 mm (calibrated)

$ 2.93

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1.16ctw Red Pyrope Garnet, Heart, VS

1.16ctw Red Pyrope Garnet, Heart, VS

5 x 5 mm (calibrated)

$ 30.49

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1.40ct Yellow Rutile Topaz, Marquise, Transparent

1.40ct Yellow Rutile Topaz, Marquise, Transparent

12.8 x 4.9 mm

$ 29.05

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37.15ct Multicolor Jasper, Cushion, Opaque

37.15ct Multicolor Jasper, Cushion, Opaque

26.6 x 23.9 mm

$ 27.27

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1.33ctw Yellow Citrine, Heart, VVS-VS

1.33ctw Yellow Citrine, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 9.27

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1.86ct Orange Hessonite Garnet, Oval, VS

1.86ct Orange Hessonite Garnet, Oval, VS

8.2 x 6.8 mm

$ 32.46

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1.43ctw Green Demantoid Garnet, Round, VS-SI
Demantoid Garnet Product Video (255623)

1.43ctw Green Demantoid Garnet, Round, VS-SI

4 mm (calibrated)

$ 141.40

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6.17ct Black Nuummite, Oval, Opaque

6.17ct Black Nuummite, Oval, Opaque

13.1 x 12.4 mm

$ 25.32

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14.76ct Multicolor Agate, Oval, Opaque

14.76ct Multicolor Agate, Oval, Opaque

15.1 x 14.1 mm

$ 13.96

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1.89ct Violet Amethyst, Heart, VVS

1.89ct Violet Amethyst, Heart, VVS

8 x 8 mm (calibrated)

$ 13.18

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3.90ctw Green Peridot, Round, VS

3.90ctw Green Peridot, Round, VS

6 mm (calibrated)

$ 31.76

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0.74ct Green Peridot, Oval, VVS-VS

0.74ct Green Peridot, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 10.32

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2.42ct Yellow Citrine, Pear Shape, VS

2.42ct Yellow Citrine, Pear Shape, VS

11.3 x 7.4 mm

$ 18.56

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2.32ct Green Peridot, Cushion, VS

2.32ct Green Peridot, Cushion, VS

9 x 7 mm (calibrated)

$ 91.35

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0.58ct Multicolor Labradorite, Pear Shape, Translucent

0.58ct Multicolor Labradorite, Pear Shape, Translucent

6 x 4 mm (calibrated)

$ 1.29

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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 -> 8 star ratings

I visited several online loose stone shops trying to find rare stones. I finally found one that I've been looking for here, and very satisfied. Looking forward to receive the item in 3 weeks.

Posted By Atsu in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great prices!!! High quality gemstones.

Posted By Ricky in October, 2025
Source: Bizrate

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

Loved the price and the quality and the certification options which is the main reason why I buy. The guarantee is also a great reason to use gem select.

Posted By Sal in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I have purchased stones from gem select in the past and have been very satisfied. I expect to repeat that experience with this purchase as well

Posted By Marti in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I found the filter options excellent. Yours was the third site I visited (asked chat got for reputable online sellers of loose gems) and the first I purchased from as I was able to easily find what I was looking for.

Posted By Kelly in May, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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