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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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Yellow Untreated Gemstones
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10.49ct Green Jadeite, Oval, Translucent

21.5 x 16.1 mm

$ 19.16

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2.12ct Orange Sunstone, Round, Translucent

8.5 mm (calibrated)

$ 12.69

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0.76ct Green Peridot, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 5.30

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0.62ct Green Peridot, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 11.11

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2.66ct Red Almandine Garnet, Oval, VVS

10 x 8 mm (calibrated)

$ 99.35

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4.75ct Yellow Citrine, Emerald Cut, VS

12 x 10 mm (calibrated)

$ 31.86

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0.80ct Yellow Color-Change Diaspore, Emerald Cut, VS

5.7 x 5.3 mm

$ 20.45

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6.41ctw Pink Strawberry Quartz, Oval, Transparent

11 x 9 mm (calibrated)

$ 48.07

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1.90ct Orange Hessonite Garnet, Oval, VS-SI

8.3 x 6.9 mm

$ 34.11

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3.50ct Pink Strawberry Quartz, Oval, Transparent

11 x 9 mm (calibrated)

$ 26.25

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6.56ct Brown Smoky Quartz, Emerald Cut, VS

12 x 12 mm (calibrated)

$ 35.94

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7.34ct Pink Kunzite, Pear Shape, VVS

15.7 x 9 mm

$ 201.04

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58.69ct Multicolor Coral, Oval, Opaque

42.5 x 27.5 mm

$ 78.33

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0.76ct Yellow Citrine, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 5.30

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1.48ctw Green Demantoid Garnet, Oval, VS-SI

6 x 4 mm (calibrated)

$ 162.15

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3.62ct Blue Chalcedony, Oval, Transparent

11 x 9 mm (calibrated)

$ 7.21

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0.77ct Green Tourmaline, Cushion, VVS-VS

6.2 x 5.1 mm

$ 38.35

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1.86ct Orange Spessartite Garnet, Oval, Transparent

7.6 x 6.3 mm

$ 46.31

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3.89ct Pink Rose Quartz, Emerald Cut, Transparent

10 x 10 mm (calibrated)

$ 21.31

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13.90ct Brown Smoky Quartz, Round, VVS-VS

17 mm (calibrated)

$ 16.90

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1.75ct Pink Morganite, Pear Shape, VS

11.6 x 6.8 mm

$ 134.21

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14.76ct Multicolor Agate, Round, Opaque

15 mm (calibrated)

$ 24.99

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4.97ctw Yellow Citrine, Heart, VS

7 x 7 mm (calibrated)

$ 27.23

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1.01ct Multicolor Chocolate Opal, Oval, Opaque

8 x 6 mm (calibrated)

$ 30.18

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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

overall great

Posted By SR in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Absolutely love the website, selection and products. Can you guys add a gemstones with inclusions tab. I like those it'd be nice to have them all in one place but i do understand it would be alot of work to go through and categorize them. Thank you anyways

Posted By The homie edgar in December, 2025
Source: Bizrate

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 -> 7 star ratings

Easy, quick.

Posted By Mich in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I loved it! Extensive inventory, great prices, I definitely will be buying from here again!

Posted By Lex in April, 2026
Source: Bizrate
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