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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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4.57ct Multicolor Pietersite, Round, Opaque

4.57ct Multicolor Pietersite, Round, Opaque

11 mm (calibrated)

$ 10.79

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14.17ct Pink Rose Quartz, Marquise, Transparent

14.17ct Pink Rose Quartz, Marquise, Transparent

25.4 x 12.2 mm

$ 23.30

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1.15ct Green Sphene, Oval, Transparent

1.15ct Green Sphene, Oval, Transparent

6.2 x 5.6 mm

$ 5.73

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2.91ctw Multicolor Labradorite, Marquise, Translucent

2.91ctw Multicolor Labradorite, Marquise, Translucent

10 x 5.2 mm

$ 6.43

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1.83ct Yellow Beryl, Trillion, VVS

1.83ct Yellow Beryl, Trillion, VVS

9 x 8.6 mm

$ 43.74

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12.01ctw White Topaz, Cushion, VS

12.01ctw White Topaz, Cushion, VS

12 x 10 mm (calibrated)

$ 79.75

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0.68ct Orange Sphalerite, Round, VS-SI

0.68ct Orange Sphalerite, Round, VS-SI

5 mm (calibrated)

$ 33.86

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1.52ct Pink Strawberry Quartz, Round, Transparent

1.52ct Pink Strawberry Quartz, Round, Transparent

8 mm (calibrated)

$ 13.33

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3.48ct Yellow Rutile Topaz, Pear Shape, Transparent

3.48ct Yellow Rutile Topaz, Pear Shape, Transparent

13.8 x 7.5 mm

$ 72.21

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6.15ct Brown Mother Of Pearl, Fancy, Opaque
Mother of Pearl Product Video (475345)

6.15ct Brown Mother Of Pearl, Fancy, Opaque

19.6 x 13.2 mm

$ 13.40

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4.56ct Pink Morganite, Oval, Transparent

4.56ct Pink Morganite, Oval, Transparent

13 x 9 mm (calibrated)

$ 49.96

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15.36ctw Multicolor Jasper, Pear Shape, Opaque

15.36ctw Multicolor Jasper, Pear Shape, Opaque

20.4 x 13.2 mm

$ 9.02

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1.60ct Orange Hessonite Garnet, Oval, VS

1.60ct Orange Hessonite Garnet, Oval, VS

7.9 x 6.3 mm

$ 26.29

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1.16ct Pink Tourmaline, Emerald Cut, VVS-VS

1.16ct Pink Tourmaline, Emerald Cut, VVS-VS

8.7 x 4.2 mm

$ 87.69

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0.32ct Pink Morganite, Round, VS

0.32ct Pink Morganite, Round, VS

4.7 mm

$ 13.28

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1.60ct Yellow Citrine, Round, VVS

1.60ct Yellow Citrine, Round, VVS

8 mm (calibrated)

$ 12.75

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0.76ct Yellow Color-Change Diaspore, Pear Shape, VVS

0.76ct Yellow Color-Change Diaspore, Pear Shape, VVS

8.1 x 4.5 mm

$ 40.12

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1.37ctw Yellow Zircon, Oval, VVS-VS

1.37ctw Yellow Zircon, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 34.11

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2.17ct Yellow Beryl, Trillion, VS

2.17ct Yellow Beryl, Trillion, VS

9 x 9 mm (calibrated)

$ 47.55

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22.20ct Black Nuummite, Oval, Opaque

22.20ct Black Nuummite, Oval, Opaque

20.9 x 16.1 mm

$ 97.51

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7.77ct White Quartz Cat'S Eye, Round, Transparent

7.77ct White Quartz Cat'S Eye, Round, Transparent

12 mm (calibrated)

$ 27.67

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10.96ct Blue Druzy Azurite, Pear Shape, Opaque

10.96ct Blue Druzy Azurite, Pear Shape, Opaque

22.4 x 13.9 mm

$ 35.15

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1.68ct Orange Sphalerite, Round, SI-I1

1.68ct Orange Sphalerite, Round, SI-I1

7 mm (calibrated)

$ 83.66

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5.22ctw Yellow Citrine, Oval, VVS-VS

5.22ctw Yellow Citrine, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 28.59

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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

Great experience. I can't wait to explore on the website further.

Posted By Kymmie in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Had a great experience and the prices are great

Posted By BuBx99 in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

They have a wonderful selection of gems of all sorts, shapes, cuts, and quality. I am very particular about the quality of stones I buy, and found many with VVS clarity and excellent cut and polish. I am thrilled with each of the stones I purchased, and would definitely recommend GemSelect to everyone.

Posted By Debsarabs in February, 2026
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 -> 8 star ratings

The website was easy to use and there were a lot of good options, I was satisfied.

Posted By Brielly in January, 2026
Source: Bizrate

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
→ View All GemSelect Reviews on Bizrate
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