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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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Orange Untreated Gemstones
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0.61ctw Blue Kyanite, Round, VS

0.61ctw Blue Kyanite, Round, VS

3.7 mm

$ 15.19

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0.37ct Pink Tourmaline, Round, Transparent

0.37ct Pink Tourmaline, Round, Transparent

4.5 mm (calibrated)

$ 14.74

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1.59ct Yellow Tourmaline, Pear Shape, VVS-VS

1.59ct Yellow Tourmaline, Pear Shape, VVS-VS

9 x 7 mm (calibrated)

$ 65.47

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2.05ct Orange Moonstone, Cushion, Translucent

2.05ct Orange Moonstone, Cushion, Translucent

9 x 7 mm (calibrated)

$ 4.08

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17.87ct Multicolor Rainbow Pyrite, Heart, Opaque

17.87ct Multicolor Rainbow Pyrite, Heart, Opaque

22.4 x 22.4 mm

$ 46.10

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38.64ctw Green Seraphinite, Sphere / Ball, Opaque

38.64ctw Green Seraphinite, Sphere / Ball, Opaque

14 mm (calibrated)

$ 63.50

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60.40ct Multicolor Agate, Fancy, Opaque

60.40ct Multicolor Agate, Fancy, Opaque

25.3 x 15.3 mm

$ 105.78

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2.68ct White Rainbow Moonstone, Oval, Transparent

2.68ct White Rainbow Moonstone, Oval, Transparent

11 x 9 mm (calibrated)

$ 85.42

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1.17ct Pink Morganite, Pear Shape, VVS

1.17ct Pink Morganite, Pear Shape, VVS

9 x 7 mm (calibrated)

$ 51.28

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76.48ct White Quartz, Oval, VS

76.48ct White Quartz, Oval, VS

28.1 x 24.7 mm

$ 130.78

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7.50ct White Quartz Cat'S Eye, Round, Transparent

7.50ct White Quartz Cat'S Eye, Round, Transparent

12 mm (calibrated)

$ 26.63

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4.42ct Violet Amethyst, Pear Shape, VVS

4.42ct Violet Amethyst, Pear Shape, VVS

14 x 10 mm (calibrated)

$ 29.05

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33.59ct Gray Hematite, Oval, Opaque

33.59ct Gray Hematite, Oval, Opaque

23.2 x 18 mm

$ 32.76

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3.34ctw Yellow Citrine, Round, VVS

3.34ctw Yellow Citrine, Round, VVS

8 mm (calibrated)

$ 23.29

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31.08ct White Howlite, Oval, Opaque

31.08ct White Howlite, Oval, Opaque

31.7 x 22.1 mm

$ 15.48

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7.06ct Yellow Apatite, Oval, VS
Apatite Product Video (385925)

7.06ct Yellow Apatite, Oval, VS

14.7 x 11.7 mm

$ 372.82

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5.31ct Pink Rose Quartz, Emerald Cut, Transparent

5.31ct Pink Rose Quartz, Emerald Cut, Transparent

10.4 x 10.2 mm

$ 26.44

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16.20ctw Multicolor Labradorite, Round, Translucent

16.20ctw Multicolor Labradorite, Round, Translucent

16 mm (calibrated)

$ 35.50

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5.50ct White Topaz, Oval, VVS-VS
Topaz Product Video (751900)

5.50ct White Topaz, Oval, VVS-VS

12 x 10 mm (calibrated)

$ 36.52

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1.74ctw Yellow Citrine, Oval, Transparent

1.74ctw Yellow Citrine, Oval, Transparent

10.2 x 4.2 mm

$ 12.13

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82.68ct Green Amazonite, Square, Opaque

82.68ct Green Amazonite, Square, Opaque

26.2 x 26.1 mm

$ 48.04

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1.64ct Green Prehnite, Pear Shape, Transparent/Translucent

1.64ct Green Prehnite, Pear Shape, Transparent/Translucent

8.4 x 6.1 mm

$ 8.98

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3.51ct Green Malachite, Oval, Opaque

3.51ct Green Malachite, Oval, Opaque

11.3 x 8.4 mm

$ 2.69

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2.53ct Green Sphene, Oval, Transparent

2.53ct Green Sphene, Oval, Transparent

8.6 x 7.7 mm

$ 12.60

View Gem
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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

The citrine gems are beautiful. I appreciated that each stone was individually shown on the website so I could see exactly what I was getting. No mystery person selecting random stones for me. The documentation included with each gem was high quality as well. Great price and arrived as expected.

Posted By Jen in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very neat and to the point

Posted By Botha in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I purchased 4 gemstones in different sizes to be able to make a family ring for my granddaughter. I got exactly what I saw and they are absolutely beautiful! Shipping was quick compared to other gem stores I have dealt with! I will definitely order more stones from your company, as I am a collector and have several stones. You are my new go to company in the future

Posted By Liz in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Filters need to be improved but rest of website is great

Posted By Rock hound in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I was able to find what I've been looking for.

Posted By Tree Dog in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Easy and functional

Posted By Dessa in March, 2026
Source: Bizrate
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