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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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4.52ct Green Jade, Oval, Opaque

4.52ct Green Jade, Oval, Opaque

12 x 10 mm (calibrated)

$ 9.01

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0.87ctw Green Peridot, Pear Shape, VVS-VS

0.87ctw Green Peridot, Pear Shape, VVS-VS

6 x 4 mm (calibrated)

$ 14.30

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30.49ct Green Maw-Sit-Sit, Oval, Opaque
Maw-Sit-Sit Product Video (476796)

30.49ct Green Maw-Sit-Sit, Oval, Opaque

20.9 x 13.8 mm

$ 100.21

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9.99ct Multicolor Fire Agate, Fancy, Opaque

9.99ct Multicolor Fire Agate, Fancy, Opaque

18.6 x 10.5 mm

$ 84.60

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4.18ctw Red Pyrope Garnet, Marquise, VVS-VS

4.18ctw Red Pyrope Garnet, Marquise, VVS-VS

11.9 x 6.1 mm

$ 36.64

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0.39ct Blue Kyanite, Round, SI

0.39ct Blue Kyanite, Round, SI

4 mm (calibrated)

$ 9.71

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4.24ct Multicolor Tourmaline, Flower Cut, Transparent
Tourmaline Product Video (690748)

4.24ct Multicolor Tourmaline, Flower Cut, Transparent

13.6 x 11.4 mm

$ 82.65

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3.85ct Yellow Citrine, Emerald Cut, VVS

3.85ct Yellow Citrine, Emerald Cut, VVS

11 x 9 mm (calibrated)

$ 29.53

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11.86ct Brown Smoky Quartz, Emerald Cut, VVS

11.86ct Brown Smoky Quartz, Emerald Cut, VVS

15 x 15 mm (calibrated)

$ 23.26

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29.28ct Multicolor Rhodochrosite, Oval, Translucent

29.28ct Multicolor Rhodochrosite, Oval, Translucent

28.3 x 16.2 mm

$ 25.66

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1.16ct Green Tourmaline, Emerald Cut, VVS-VS

1.16ct Green Tourmaline, Emerald Cut, VVS-VS

15.8 x 2.9 mm

$ 30.49

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3.42ct Blue Chalcedony, Oval, Transparent

3.42ct Blue Chalcedony, Oval, Transparent

11 x 9 mm (calibrated)

$ 6.81

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34.68ct Green Bloodstone, Round, Opaque

34.68ct Green Bloodstone, Round, Opaque

27.2 mm

$ 15.89

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0.09ctw Black Diamond, Round, Opaque

0.09ctw Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 26.15

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7.28ct Yellow Citrine, Emerald Cut, VVS-VS

7.28ct Yellow Citrine, Emerald Cut, VVS-VS

12 x 10 mm (calibrated)

$ 55.83

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11.30ct Pink Rose Quartz, Emerald Cut, Transparent

11.30ct Pink Rose Quartz, Emerald Cut, Transparent

14 x 14 mm (calibrated)

$ 61.90

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0.22ct Black Diamond, Square, Opaque

0.22ct Black Diamond, Square, Opaque

2.9 x 2.8 mm

$ 109.56

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1.20ct Purple Spinel, Cushion, VS

1.20ct Purple Spinel, Cushion, VS

6.3 x 5.4 mm

$ 143.42

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0.93ct Green Tourmaline, Emerald Cut, VVS-VS

0.93ct Green Tourmaline, Emerald Cut, VVS-VS

9.6 x 3.8 mm

$ 46.31

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25.34ct Multicolor Feather Pyrite, Cushion, Opaque

25.34ct Multicolor Feather Pyrite, Cushion, Opaque

25 x 17.4 mm

$ 19.77

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0.53ctw White Diamond, Heart, VVS
Diamond Product Video (685656)

0.53ctw White Diamond, Heart, VVS

2.9 x 2.6 mm

$ 2,159.34

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2.54ct Turquoise Fluorite, Cushion, Transparent

2.54ct Turquoise Fluorite, Cushion, Transparent

9 x 6.3 mm

$ 10.42

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5.29ct Yellow Rutile Topaz, Oval, Transparent
Rutile Topaz Product Video (753609)

5.29ct Yellow Rutile Topaz, Oval, Transparent

12.2 x 9.5 mm

$ 109.77

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4.94ctw Orange Zircon, Round, VVS-VS
Zircon Product Video (481933)

4.94ctw Orange Zircon, Round, VVS-VS

6 mm (calibrated)

$ 117.88

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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

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

I love the ability to choose from many options of shapes, gemstone type, color, and so forth. It is fun!

Posted By Geof in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

It's always a pleasure doing business with Gem Select. Outstanding products ant very reasonable prices. Thank You One and All.

Posted By G.W. or Bakyow in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Good, hope gem quality is good and genuine

Posted By Varun in May, 2026
Source: Bizrate

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
Source: Bizrate

Overall Rating -> 10 star ratings

Was a good experience.

Posted By Tim in July, 2025
Source: Bizrate
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