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Untreated Gemstones

Browse our selection of untreated gemstones featuring natural color, clarity and beauty without enhancements.

Untreated Gemstones Weight
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34.62ct Purple Ruby-Zoisite, Fancy, Opaque
Ruby-Zoisite Product Video (335181)

34.62ct Purple Ruby-Zoisite, Fancy, Opaque

34.7 x 26.2 mm

$ 97.57

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7.48ct Violet Amethyst, Pear Shape, Transparent

7.48ct Violet Amethyst, Pear Shape, Transparent

18.8 x 11.6 mm

$ 49.17

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7.68ct Pink Morganite, Pear Shape, Translucent

7.68ct Pink Morganite, Pear Shape, Translucent

19.1 x 10 mm

$ 84.15

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3.61ct Yellow Citrine, Baguette, VS

3.61ct Yellow Citrine, Baguette, VS

12 x 8 mm (calibrated)

$ 27.69

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1.29ct Orange Hessonite Garnet, Oval, VS

1.29ct Orange Hessonite Garnet, Oval, VS

6.9 x 5.6 mm

$ 25.70

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1.99ct Yellow Citrine, Trillion, VVS-VS

1.99ct Yellow Citrine, Trillion, VVS-VS

9 x 9 mm (calibrated)

$ 13.88

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2.40ctw Red Pyrope Garnet, Marquise, VVS-VS

2.40ctw Red Pyrope Garnet, Marquise, VVS-VS

10 x 5 mm

$ 21.03

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0.87ct Yellow Citrine, Oval, Transparent

0.87ct Yellow Citrine, Oval, Transparent

10 x 4.1 mm

$ 6.07

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14.90ctw Yellow Citrine, Emerald Cut, VVS-VS

14.90ctw Yellow Citrine, Emerald Cut, VVS-VS

14 x 10 mm (calibrated)

$ 93.87

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4.95ctw Multicolor Labradorite, Round, Translucent

4.95ctw Multicolor Labradorite, Round, Translucent

8 mm (calibrated)

$ 10.65

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0.93ctw Red Pyrope Garnet, Square, VVS-VS

0.93ctw Red Pyrope Garnet, Square, VVS-VS

4 x 4 mm (calibrated)

$ 7.13

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8.00ct Purple Kunzite, Oval, VS
Kunzite Product Video (453621)

8.00ct Purple Kunzite, Oval, VS

16.3 x 8.6 mm

$ 219.12

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0.74ct Green Chrome Diopside, Oval, VS

0.74ct Green Chrome Diopside, Oval, VS

7 x 5 mm (calibrated)

$ 18.43

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31.68ct Green Bloodstone, Pear Shape, Opaque

31.68ct Green Bloodstone, Pear Shape, Opaque

33 x 21.8 mm

$ 14.20

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1.49ctw Red Pyrope Garnet, Square, VS

1.49ctw Red Pyrope Garnet, Square, VS

5 x 5 mm (calibrated)

$ 11.42

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2.02ctw Orange Citrine, Heart, VVS

2.02ctw Orange Citrine, Heart, VVS

7 x 7 mm (calibrated)

$ 16.77

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4.26ctw Red Almandine Garnet, Oval, VVS-VS

4.26ctw Red Almandine Garnet, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 159.11

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2.04ct Orange Hessonite Garnet, Cushion, VS-SI

2.04ct Orange Hessonite Garnet, Cushion, VS-SI

8 x 6 mm (calibrated)

$ 30.34

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2.66ct Red Almandine Garnet, Oval, VVS

2.66ct Red Almandine Garnet, Oval, VVS

10 x 8 mm (calibrated)

$ 99.35

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5.12ct White Topaz, Oval, VS

5.12ct White Topaz, Oval, VS

13 x 9 mm (calibrated)

$ 33.66

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5.01ct Pink Morganite, Oval, Translucent

5.01ct Pink Morganite, Oval, Translucent

14 x 10 mm (calibrated)

$ 54.89

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2.61ctw Yellow Citrine, Emerald Cut, VVS-VS

2.61ctw Yellow Citrine, Emerald Cut, VVS-VS

8 x 6 mm (calibrated)

$ 20.02

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5.63ct Pink Rose Quartz, Square, Transparent

5.63ct Pink Rose Quartz, Square, Transparent

10.5 x 10.5 mm

$ 30.84

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20.56ct Blue Turquoise, Oval, Opaque

20.56ct Blue Turquoise, Oval, Opaque

21.8 x 17.1 mm

$ 61.44

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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

Wonderful purchase, can't wait to see the stone.

Posted By Tim in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Very good.

Posted By Tommy in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Easy process.

Posted By Crafty Seabee in March, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Ita's a pretty good and simple way to find gems that youa're looking for amazing selection

Posted By Amman in May, 2026
Source: Bizrate

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
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
→ View All GemSelect Reviews on Bizrate
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