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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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0.77ct Pink Morganite, Pear Shape, VVS-VS

0.77ct Pink Morganite, Pear Shape, VVS-VS

9.7 x 4.4 mm

$ 67.49

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3.08ctw Yellow Citrine, Emerald Cut, VVS-VS

3.08ctw Yellow Citrine, Emerald Cut, VVS-VS

8 x 6 mm (calibrated)

$ 21.40

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4.43ct Pink Strawberry Quartz, Oval, Translucent

4.43ct Pink Strawberry Quartz, Oval, Translucent

12 x 10 mm (calibrated)

$ 52.95

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23.36ct Gray Hematite, Pear Shape, Opaque

23.36ct Gray Hematite, Pear Shape, Opaque

20.2 x 16 mm

$ 22.78

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1.97ct Yellow Citrine, Oval, VS

1.97ct Yellow Citrine, Oval, VS

9.4 x 7.2 mm

$ 15.11

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1.43ct Orange Hessonite Garnet, Cushion, VS

1.43ct Orange Hessonite Garnet, Cushion, VS

7 x 5 mm (calibrated)

$ 21.26

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0.86ct Yellow Citrine, Oval, Transparent

0.86ct Yellow Citrine, Oval, Transparent

10.2 x 4.1 mm

$ 5.99

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4.49ct Violet Amethyst, Pear Shape, VVS

4.49ct Violet Amethyst, Pear Shape, VVS

15 x 10 mm (calibrated)

$ 34.43

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4.38ctw Multicolor Spectrolite, Oval, Opaque

4.38ctw Multicolor Spectrolite, Oval, Opaque

10 x 8 mm (calibrated)

$ 20.02

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4.28ctw Violet Amethyst, Oval, VVS-VS

4.28ctw Violet Amethyst, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 23.45

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0.68ct Green Sphene, Oval, Transparent

0.68ct Green Sphene, Oval, Transparent

5.9 x 4.9 mm

$ 3.39

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4.58ctw Yellow Citrine, Oval, VVS-VS

4.58ctw Yellow Citrine, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 25.09

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4.80ct Yellow Citrine, Cushion, Transparent

4.80ct Yellow Citrine, Cushion, Transparent

12 x 10 mm (calibrated)

$ 36.81

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1.52ctw Red Rhodolite Garnet, Square, VS

1.52ctw Red Rhodolite Garnet, Square, VS

5 x 5 mm (calibrated)

$ 13.30

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3.73ctw Multicolor Spectrolite, Round, Opaque

3.73ctw Multicolor Spectrolite, Round, Opaque

8 mm (calibrated)

$ 17.05

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7.58ct Multicolor Boulder Opal, Fancy, Opaque

7.58ct Multicolor Boulder Opal, Fancy, Opaque

18 x 9.2 mm

$ 37.75

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29.93ct Pink Kunzite, Emerald Cut, VS
Kunzite Product Video (695901)

29.93ct Pink Kunzite, Emerald Cut, VS

20 x 15 mm (calibrated)

$ 745.26

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1.50ct Yellow Beryl, Round, VVS

1.50ct Yellow Beryl, Round, VVS

8 mm (calibrated)

$ 29.88

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2.70ctw Green Peridot, Pear Shape, VVS-VS

2.70ctw Green Peridot, Pear Shape, VVS-VS

7 x 5 mm (calibrated)

$ 24.65

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8.59ct Black Tourmaline, Emerald Cut, Opaque

8.59ct Black Tourmaline, Emerald Cut, Opaque

14 x 10 mm (calibrated)

$ 42.78

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1.34ctw Multicolor Opal, Round, Translucent

1.34ctw Multicolor Opal, Round, Translucent

6 mm (calibrated)

$ 51.39

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1.17ct Green Tourmaline, Baguette, VS

1.17ct Green Tourmaline, Baguette, VS

12.4 x 3.2 mm

$ 40.79

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27.94ct White Scolecite, Oval, Opaque

27.94ct White Scolecite, Oval, Opaque

31.3 x 23.7 mm

$ 33.07

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22.24ct Multicolor Jasper, Pear Shape, Opaque

22.24ct Multicolor Jasper, Pear Shape, Opaque

24.6 x 21.5 mm

$ 12.91

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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

IT WAS GREAT SIMPLE I WAS ABLE TO MAKE AN ACCOUNT EASY AND WAS ABLE TO FAVORITE ALL OF MY FINAL SELECTED GEMS, I JUST LOVE IT.

Posted By YE in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very good.

Posted By Tommy in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Have made 2 purchases so far from GemSelect and they have been amazing! Anytime I requested additional info, videos or pictures of a particular item, the response was always timely and helpful. This is a great place to buy, if you are looking for loose stones. Highly recommend!

Posted By Britnee Rose in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

This is the first time I have used this site. I was dissatisfied with the quality of gems and supplies elsewhere and decided to try GemSelect. They are awesome! I was thrilled to see the variety and the great web performance. There was the ability to search for information as well as gems. Things like the clarity rating system and caret weight of the gems. I have always loved making things and I have just started to make jewelry as a business. However I have never made a ring before and have always wanted to. On GemSelect I was able to find good quality gems to use in my creations. I am so glad the website is so easy to use. Thank you GemSelect.

Posted By PickyShopper in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

the selection is good as are the prices

Posted By Old man in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Found a beautiful opal at a great price. I was not disappointed when it arrived. Even better in person.

Posted By Fried Rice in August, 2025
Source: Bizrate
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