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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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Yellow Untreated Gemstones
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11.36ctw Green Amazonite, Round, Opaque

9 mm (calibrated)

$ 27.75

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3.08ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 21.47

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0.41ct Yellow Color-Change Diaspore, Oval, VS

5 x 4 mm (calibrated)

$ 21.65

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3.43ct Yellow Apatite, Oval, VS

10 x 9 mm

$ 112.74

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4.66ctw Yellow Citrine, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 25.53

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2.18ct Yellow Citrine, Trillion, VS

9 x 9 mm (calibrated)

$ 16.72

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0.71ct Blue Kyanite, Oval, SI-I1

6.3 x 4.2 mm

$ 15.55

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35.02ct Multicolor Jasper, Square, Opaque

26.3 x 24.1 mm

$ 38.36

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20.36ct Green Jadeite, Oval, Translucent

23.2 x 17.1 mm

$ 66.92

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1.30ctw Red Pyrope Garnet, Heart, VS

5 x 5 mm (calibrated)

$ 10.36

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6.93ct Violet Amethyst, Pear Shape, VVS-VS

16 x 12 mm (calibrated)

$ 53.14

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1.94ct Orange Hessonite Garnet, Cushion, VS-SI

7 x 7 mm (calibrated)

$ 38.25

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0.68ct Yellow Color-Change Diaspore, Emerald Cut, VVS-VS

7 x 3.8 mm

$ 21.65

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72.94ct Multicolor Jasper, Baguette, Opaque

35.2 x 23.2 mm

$ 58.12

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2.52ctw Violet Amethyst, Emerald Cut, Transparent

7 x 5 mm (calibrated)

$ 15.06

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3.68ct Pink Morganite, Trillion, Translucent

11 x 11 mm (calibrated)

$ 40.32

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8.46ct Multicolor Cinnabar, Round, Opaque

16 mm (calibrated)

$ 9.90

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2.45ct Pink Tourmaline, Emerald Cut, VS-SI

10.1 x 6.1 mm

$ 185.21

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1.26ct Yellow Citrine, Cushion, Transparent

8 x 6 mm (calibrated)

$ 9.66

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2.33ct Violet Sapphire, Oval, VS

9.5 x 7.4 mm

$ 932.00

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4.13ct Yellow Rutile Topaz, Oval, Transparent

12 x 10 mm (calibrated)

$ 85.70

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1.11ct Orange Moonstone, Marquise, Translucent

9.4 x 4.9 mm

$ 2.21

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7.58ct Pink Rose Quartz, Emerald Cut, Transparent

12 x 12 mm (calibrated)

$ 41.52

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6.33ctw White Rutile Quartz, Round, Translucent

9 mm (calibrated)

$ 13.88

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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

Navigating the site was very easy and the photos of the exact gem you would be purchasing was well done.

Posted By HVeeder in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Have made 2 purchases so far from GemSelect and they have been amazing! Anytime I requested additional info, videos or pictures of a particular item, the response was always timely and helpful. This is a great place to buy, if you are looking for loose stones. Highly recommend!

Posted By Britnee Rose in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Love, and have always loved, your website.

Posted By Aberabic in July, 2025
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

It's mostly good, only some item's are easier to find through the search than the menu

Posted By Wayne in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

overall great

Posted By SR in April, 2026
Source: Bizrate
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