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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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1.24ct Pink Morganite, Pear Shape, VVS-VS

1.24ct Pink Morganite, Pear Shape, VVS-VS

12.8 x 5.8 mm

$ 135.85

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6.68ct Violet Amethyst, Pear Shape, VVS-VS

6.68ct Violet Amethyst, Pear Shape, VVS-VS

16 x 12 mm (calibrated)

$ 51.24

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0.74ct Yellow Color-Change Diaspore, Square, VS

0.74ct Yellow Color-Change Diaspore, Square, VS

5 x 5 mm (calibrated)

$ 27.49

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21.82ct White Howlite, Cushion, Opaque

21.82ct White Howlite, Cushion, Opaque

21.5 x 18.1 mm

$ 10.22

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1.56ct Orange Hessonite Garnet, Oval, VS

1.56ct Orange Hessonite Garnet, Oval, VS

7.9 x 6.5 mm

$ 27.53

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6.02ctw Multicolor Ruby In Fuchsite, Marquise, Translucent

6.02ctw Multicolor Ruby In Fuchsite, Marquise, Translucent

16.9 x 8.2 mm

$ 44.45

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1.73ctw Orange Moonstone, Trillion, Translucent

1.73ctw Orange Moonstone, Trillion, Translucent

6 x 6 mm (calibrated)

$ 3.47

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2.80ctw Red Rhodolite Garnet, Square, VS

2.80ctw Red Rhodolite Garnet, Square, VS

5 x 5 mm (calibrated)

$ 24.51

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0.79ct Orange Hessonite Garnet, Emerald Cut, VS-SI

0.79ct Orange Hessonite Garnet, Emerald Cut, VS-SI

5.9 x 4.6 mm

$ 11.74

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5.34ct Multicolor Rainbow Pyrite, Fancy, Opaque

5.34ct Multicolor Rainbow Pyrite, Fancy, Opaque

18.1 x 11.2 mm

$ 15.95

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1.88ct Orange Hessonite Garnet, Oval, VS

1.88ct Orange Hessonite Garnet, Oval, VS

8.2 x 6.8 mm

$ 28.73

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1.07ct Pink Morganite, Round, VS

1.07ct Pink Morganite, Round, VS

7 mm (calibrated)

$ 41.57

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3.02ctw Yellow Citrine, Emerald Cut, VVS-VS
Citrine Product Video (556984)

3.02ctw Yellow Citrine, Emerald Cut, VVS-VS

8 x 6 mm (calibrated)

$ 20.98

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0.49ctw Blue Kyanite, Round, VS-SI

0.49ctw Blue Kyanite, Round, VS-SI

3.5 mm (calibrated)

$ 12.20

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1.02ct Pink Rhodolite Garnet, Oval, VS

1.02ct Pink Rhodolite Garnet, Oval, VS

7 x 5 mm (calibrated)

$ 38.10

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25.16ctw Black Spinel, Baguette, Opaque

25.16ctw Black Spinel, Baguette, Opaque

17.6 x 8.2 mm

$ 199.03

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0.73ct Blue Kyanite, Oval, SI

0.73ct Blue Kyanite, Oval, SI

6.3 x 4.1 mm

$ 15.99

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2.46ct Red Almandine Garnet, Oval, VS

2.46ct Red Almandine Garnet, Oval, VS

9 x 7 mm (calibrated)

$ 91.88

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0.52ct Orange Citrine, Marquise, VS

0.52ct Orange Citrine, Marquise, VS

8 x 4 mm (calibrated)

$ 3.63

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3.22ctw Yellow Citrine, Round, VS

3.22ctw Yellow Citrine, Round, VS

8 mm (calibrated)

$ 25.66

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19.98ct Multicolor Quartz With Marcasite, Oval, Transparent

19.98ct Multicolor Quartz With Marcasite, Oval, Transparent

24.6 x 14.7 mm

$ 131.34

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3.66ct Violet Amethyst, Pear Shape, VVS-VS

3.66ct Violet Amethyst, Pear Shape, VVS-VS

13 x 9 mm (calibrated)

$ 28.07

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4.07ctw Red Pyrope Garnet, Square, VVS-VS

4.07ctw Red Pyrope Garnet, Square, VVS-VS

4 x 4 mm (calibrated)

$ 31.22

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5.59ct Multicolor Agate, Oval, Opaque

5.59ct Multicolor Agate, Oval, Opaque

12 x 10 mm (calibrated)

$ 9.46

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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

All good

Posted By DouscheGift in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I can pick and choose from large selection and find just what I need for .y projects, currently my cane.

Posted By Darkstar731 in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

good navigation and simple interface.

Posted By Dave in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Easy process.

Posted By Crafty Seabee in March, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Easy to use. Many options to find the right gemstone

Posted By Liz in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Had a great experience and the prices are great

Posted By BuBx99 in November, 2025
Source: Bizrate
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