90,000+Happy Customers
20+Years
WorldwideShipping
Cart
Free Report Included
Worldwide Shipping
30 Day Returns
Help Center Shipping Payment and Checkout Returns Certificates Contact Us
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
Untreated Gemstones Clarity
Untreated Gemstones Price
Untreated Gemstones Treatment

Size Explained

Choose Size or Size Range
For Example: 6-7
For Example: 8-9
Bi-color Untreated Gemstones
Black Untreated Gemstones
Blue Untreated Gemstones
Brown Untreated Gemstones
Golden Untreated Gemstones
Gray Untreated Gemstones
Green Untreated Gemstones
Multicolor Untreated Gemstones
Orange Untreated Gemstones
Pink Untreated Gemstones
Purple Untreated Gemstones
Red Untreated Gemstones
Turquoise Untreated Gemstones
Violet Untreated Gemstones
White Untreated Gemstones
Yellow Untreated Gemstones
Single
Pairs
Lots
Faceted
Cabochons
Clear All
1.98ct Yellow Citrine, Round, VVS

1.98ct Yellow Citrine, Round, VVS

8 mm (calibrated)

$ 13.80

View Gem
1.57ct Violet Amethyst, Square, VS

1.57ct Violet Amethyst, Square, VS

7 x 7 mm (calibrated)

$ 12.04

View Gem
12.96ct Turquoise Cat'S Eye Aquamarine, Oval, Transparent/Translucent
Cat's Eye Aquamarine Product Video (333927)

12.96ct Turquoise Cat'S Eye Aquamarine, Oval, Transparent/Translucent

16.3 x 11.5 mm

$ 212.99

View Gem
2.43ct Turquoise Grandidierite, Pear Shape, Translucent
Grandidierite Product Video (471841)

2.43ct Turquoise Grandidierite, Pear Shape, Translucent

12 x 7.1 mm

$ 242.03

View Gem
1.09ct Pink Strawberry Quartz, Round, Transparent

1.09ct Pink Strawberry Quartz, Round, Transparent

7 mm (calibrated)

$ 9.55

View Gem
3.54ct Green Prehnite, Pear Shape, Transparent

3.54ct Green Prehnite, Pear Shape, Transparent

10.4 x 7.7 mm

$ 9.70

View Gem
2.09ct Purple Rhodolite Garnet, Oval, VS
Rhodolite Garnet Product Video (735235)

2.09ct Purple Rhodolite Garnet, Oval, VS

8.3 x 6.5 mm

$ 83.27

View Gem
1.96ct Orange Moonstone, Cushion, Translucent

1.96ct Orange Moonstone, Cushion, Translucent

9 x 7 mm (calibrated)

$ 3.90

View Gem
2.13ct Orange Moonstone, Trillion, Translucent

2.13ct Orange Moonstone, Trillion, Translucent

8 x 8 mm (calibrated)

$ 4.24

View Gem
6.22ctw Brown Tiger'S Eye, Oval, Opaque

6.22ctw Brown Tiger'S Eye, Oval, Opaque

10 x 8 mm (calibrated)

$ 9.30

View Gem
5.79ct Multicolor Coral, Pear Shape, Translucent

5.79ct Multicolor Coral, Pear Shape, Translucent

17.3 x 11.8 mm

$ 18.33

View Gem
8.38ct Pink Morganite, Oval, Translucent

8.38ct Pink Morganite, Oval, Translucent

16 x 12 mm (calibrated)

$ 91.81

View Gem
11.62ctw Multicolor Jasper, Pear Shape, Opaque

11.62ctw Multicolor Jasper, Pear Shape, Opaque

17.9 x 12.1 mm

$ 6.83

View Gem
5.02ctw Yellow Citrine, Pear Shape, VS

5.02ctw Yellow Citrine, Pear Shape, VS

8 x 5 mm (calibrated)

$ 27.50

View Gem
0.94ct Green Peridot, Oval, VVS-VS

0.94ct Green Peridot, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 6.56

View Gem
0.74ct Green Peridot, Oval, VVS-VS

0.74ct Green Peridot, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 5.16

View Gem
4.90ct Green Actinolite Cat'S Eye, Oval, Translucent

4.90ct Green Actinolite Cat'S Eye, Oval, Translucent

11 x 11 mm (calibrated)

$ 34.16

View Gem
10.48ctw Multicolor Labradorite, Marquise, Translucent

10.48ctw Multicolor Labradorite, Marquise, Translucent

16 x 8 mm (calibrated)

$ 23.17

View Gem
9.43ctw Green Amazonite, Round, Opaque

9.43ctw Green Amazonite, Round, Opaque

8 mm (calibrated)

$ 23.04

View Gem
0.66ct Yellow Zircon, Oval, VVS

0.66ct Yellow Zircon, Oval, VVS

6 x 4 mm (calibrated)

$ 16.43

View Gem
6.74ct Multicolor Amethyst Geode Slice, Fancy, Transparent

6.74ct Multicolor Amethyst Geode Slice, Fancy, Transparent

15.4 x 12.9 mm

$ 7.18

View Gem
20.49ct Multicolor Rainbow Pyrite, Fancy, Opaque

20.49ct Multicolor Rainbow Pyrite, Fancy, Opaque

36.3 x 12.5 mm

$ 61.22

View Gem
4.26ct Yellow Rutile Topaz, Pear Shape, Transparent

4.26ct Yellow Rutile Topaz, Pear Shape, Transparent

15.7 x 7.3 mm

$ 88.40

View Gem
3.18ctw Purple Rhodolite Garnet, Marquise, VVS-VS

3.18ctw Purple Rhodolite Garnet, Marquise, VVS-VS

9 x 4.5 mm

$ 69.68

View Gem
1 2 3
...
499
Choose Page
1 - 1896

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 -> 8 star ratings

I visited several online loose stone shops trying to find rare stones. I finally found one that I've been looking for here, and very satisfied. Looking forward to receive the item in 3 weeks.

Posted By Atsu in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very large selection from affordable to high end I will be coming back to shop again!

Posted By GreenGator in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I have a beautiful emerald I purchased from a company names gemselect and they are awesome! You should try them out?

Posted By Lynn in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

All good

Posted By DouscheGift in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I had a very easy time navigating the web page and using filters to find what I was looking for. The varied selection was nice to see and pricing is clear and fair.

Posted By Mattick in May, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

They have literally everything on this website! The prices are also pretty good, I was able to find plenty of nice stones that I could afford!

Posted By JC in March, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
Enlarged Gemstone Image