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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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4.95ct Yellow Citrine, Oval, VS

4.95ct Yellow Citrine, Oval, VS

14 x 10 mm (calibrated)

$ 37.96

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0.76ct Yellow Beryl, Oval, VS

0.76ct Yellow Beryl, Oval, VS

7.5 x 5.6 mm

$ 15.14

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0.67ctw Blue Kyanite, Round, VS-SI

0.67ctw Blue Kyanite, Round, VS-SI

3.7 mm

$ 12.01

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2.13ct Orange Hessonite Garnet, Baguette, VS-SI

2.13ct Orange Hessonite Garnet, Baguette, VS-SI

7.7 x 5.6 mm

$ 40.23

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1.04ct Green Peridot, Emerald Cut, VVS-VS

1.04ct Green Peridot, Emerald Cut, VVS-VS

7 x 5 mm (calibrated)

$ 15.54

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4.50ct Pink Strawberry Quartz, Oval, Translucent

4.50ct Pink Strawberry Quartz, Oval, Translucent

12 x 10 mm (calibrated)

$ 53.78

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8.30ct Yellow Apatite, Emerald Cut, VS
Apatite Product Video (395813)

8.30ct Yellow Apatite, Emerald Cut, VS

11 x 11 mm (calibrated)

$ 337.55

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85.07ct Yellow Quartz, Oval, VVS

85.07ct Yellow Quartz, Oval, VVS

41.1 x 22.4 mm

$ 97.09

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26.81ct Violet Amethyst, Pear Shape, VS
Amethyst Product Video (753799)

26.81ct Violet Amethyst, Pear Shape, VS

21.9 x 17.4 mm

$ 222.52

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4.93ct Brown Star Moonstone, Oval, Translucent

4.93ct Brown Star Moonstone, Oval, Translucent

12 x 8.4 mm

$ 21.60

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3.13ct Violet Amethyst, Pear Shape, VS

3.13ct Violet Amethyst, Pear Shape, VS

13 x 9 mm (calibrated)

$ 24.00

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42.47ct Green Uvarovite Garnet Drusy, Fancy, Opaque

42.47ct Green Uvarovite Garnet Drusy, Fancy, Opaque

29 x 28.4 mm

$ 138.18

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4.41ctw Multicolor Andalusite, Round, VS
Andalusite Product Video (381950)

4.41ctw Multicolor Andalusite, Round, VS

4 mm (calibrated)

$ 193.71

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4.96ct Brown Rutile Quartz, Round, Transparent

4.96ct Brown Rutile Quartz, Round, Transparent

12 mm (calibrated)

$ 12.45

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1.72ct Yellow Citrine, Trillion, VVS-VS

1.72ct Yellow Citrine, Trillion, VVS-VS

8.6 x 8.5 mm

$ 10.65

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4.01ctw Red Pyrope Garnet, Marquise, VVS-VS

4.01ctw Red Pyrope Garnet, Marquise, VVS-VS

12 x 5.9 mm

$ 44.06

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1.60ct Orange Moonstone, Trillion, Translucent

1.60ct Orange Moonstone, Trillion, Translucent

8 x 8 mm (calibrated)

$ 3.19

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2.21ctw Yellow Citrine, Square, VVS-VS

2.21ctw Yellow Citrine, Square, VVS-VS

6 x 6 mm (calibrated)

$ 16.95

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0.51ct Yellow Citrine, Cushion, VS

0.51ct Yellow Citrine, Cushion, VS

5 x 5 mm (calibrated)

$ 3.81

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6.89ct Multicolor Agate, Oval, Opaque

6.89ct Multicolor Agate, Oval, Opaque

12.5 x 11.6 mm

$ 5.49

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6.07ct Yellow Citrine, Oval, VVS-VS

6.07ct Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 36.45

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4.83ctw Pink Strawberry Quartz, Round, Transparent

4.83ctw Pink Strawberry Quartz, Round, Transparent

9 mm (calibrated)

$ 25.50

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6.28ct Brown Tiger'S Eye, Cushion, Opaque

6.28ct Brown Tiger'S Eye, Cushion, Opaque

10 x 10 mm (calibrated)

$ 6.26

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2.01ct Green Prehnite, Oval, Transparent

2.01ct Green Prehnite, Oval, Transparent

8.9 x 7.6 mm

$ 5.94

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

I found the filter options excellent. Yours was the third site I visited (asked chat got for reputable online sellers of loose gems) and the first I purchased from as I was able to easily find what I was looking for.

Posted By Kelly in May, 2026
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

All good

Posted By DouscheGift in August, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

I've purchased things from GemSelect before. What you see is what you get, which is not always the case with gem sites online. You can find some good value with gem select, and I will buy from them again.

Posted By Meyeusername in March, 2026
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

Absolutely love the website, selection and products. Can you guys add a gemstones with inclusions tab. I like those it'd be nice to have them all in one place but i do understand it would be alot of work to go through and categorize them. Thank you anyways

Posted By The homie edgar in December, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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