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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
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Yellow Untreated Gemstones
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1.03ct Blue Kyanite, Round, SI

6 mm (calibrated)

$ 25.65

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3.30ct Yellow Citrine, Square, VVS-VS

9 x 9 mm (calibrated)

$ 25.31

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3.16ct Green Chrysoprase, Baguette, Translucent

9.9 x 7.5 mm

$ 26.23

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4.22ctw Orange Sunstone, Oval, Transparent

10 x 8 mm (calibrated)

$ 32.36

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0.56ct Green Peridot, Marquise, VS

8 x 4 mm (calibrated)

$ 8.37

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0.70ct Yellow Citrine, Pear Shape, VVS

7 x 5 mm (calibrated)

$ 3.49

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1.53ct Yellow Citrine, Oval, Transparent

10 x 8 mm (calibrated)

$ 11.74

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3.25ct Red Almandine Garnet, Pear Shape, VS

12 x 8 mm (calibrated)

$ 121.39

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2.93ct Red Almandine Garnet, Pear Shape, VS

12 x 8 mm (calibrated)

$ 24.32

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1.52ct Green Tourmaline, Pear Shape, Transparent

9.1 x 5.3 mm

$ 16.19

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2.07ct Green Sphene, Oval, Translucent

8.4 x 6.7 mm

$ 11.35

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1.36ct Orange Sphalerite, Emerald Cut, SI-I1

5.9 x 5.6 mm

$ 67.73

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0.10ctw Black Diamond, Square, Opaque

2 x 2 mm (calibrated)

$ 49.80

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1.00ct Yellow Citrine, Marquise, VS

9.2 x 5 mm

$ 7.97

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1.68ct Yellow Citrine, Emerald Cut, VVS

8 x 6 mm (calibrated)

$ 13.39

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4.90ct Gray Jadeite, Marquise, Translucent

18.7 x 8.8 mm

$ 16.10

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19.19ct Bi-Color Ametrine, Oval, VVS

20 x 15 mm (calibrated)

$ 105.13

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1.39ct Orange Hessonite Garnet, Baguette, VS

7 x 5 mm (calibrated)

$ 30.46

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3.91ct Blue Chalcedony, Oval, Transparent

11 x 9 mm (calibrated)

$ 7.79

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2.58ctw Orange Hessonite Garnet, Square, VS

6 x 6 mm (calibrated)

$ 56.53

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1.56ct Green Tourmaline, Emerald Cut, VVS-VS

10.5 x 4.8 mm

$ 77.69

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64.51ct Yellow Druzy Citrine, Fancy, Opaque

26.8 x 22 mm

$ 54.78

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5.52ct Violet Amethyst, Marquise, VS

16.2 x 8.6 mm

$ 42.33

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82.87ct Pink Rose Quartz, Oval, Transparent

29.1 x 25.9 mm

$ 151.32

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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 love the product and the details about each of them.

Posted By Love It! in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

good navigation and simple interface.

Posted By Dave in April, 2026
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Overall Rating -> 8 star ratings

Good prices

Posted By TRM in October, 2025
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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
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Overall Rating -> 10 star ratings

Everything was great, website user friendly, quality amazing, communication amazing, delivery amazing, everything was as expected, they done what they said they would, overall experience was amazing.

Posted By Jac in July, 2025
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Overall Rating -> 10 star ratings

Would have bought an indigo and selenite, but neither listed. But, you do offer quite a large assortment otherwise.

Posted By JD in July, 2025
Source: Bizrate
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