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
4.33ctw Green Peridot, Square, VVS-VS

4.33ctw Green Peridot, Square, VVS-VS

6 x 6 mm (calibrated)

$ 75.76

View Gem
1.29ct Yellow Beryl, Oval, VVS-VS

1.29ct Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 28.27

View Gem
3.92ctw Green Peridot, Round, VS

3.92ctw Green Peridot, Round, VS

6 mm (calibrated)

$ 38.31

View Gem
9.46ct Pink Rose Quartz, Emerald Cut, Transparent

9.46ct Pink Rose Quartz, Emerald Cut, Transparent

12 x 12 mm (calibrated)

$ 51.83

View Gem
4.25ct Yellow Citrine, Oval, VVS

4.25ct Yellow Citrine, Oval, VVS

13 x 9 mm (calibrated)

$ 32.60

View Gem
9.29ct Multicolor Coral, Round, Translucent

9.29ct Multicolor Coral, Round, Translucent

17 mm (calibrated)

$ 29.42

View Gem
5.68ct Yellow Citrine, Emerald Cut, VVS-VS

5.68ct Yellow Citrine, Emerald Cut, VVS-VS

12 x 8 mm (calibrated)

$ 43.57

View Gem
3.97ct Pink Strawberry Quartz, Oval, Translucent

3.97ct Pink Strawberry Quartz, Oval, Translucent

12 x 10 mm (calibrated)

$ 47.45

View Gem
1.13ct Green Peridot, Oval, VS

1.13ct Green Peridot, Oval, VS

8 x 6 mm (calibrated)

$ 10.13

View Gem
1.26ct Pink Tourmaline, Oval, Transparent

1.26ct Pink Tourmaline, Oval, Transparent

8 x 6 mm (calibrated)

$ 20.88

View Gem
2.16ct Red Almandine Garnet, Oval, VVS

2.16ct Red Almandine Garnet, Oval, VVS

9 x 7 mm (calibrated)

$ 80.68

View Gem
2.14ct Red Almandine Garnet, Baguette, VVS

2.14ct Red Almandine Garnet, Baguette, VVS

9.9 x 5 mm

$ 17.76

View Gem
1.53ct Orange Moonstone, Trillion, Translucent

1.53ct Orange Moonstone, Trillion, Translucent

8 x 8 mm (calibrated)

$ 3.05

View Gem
3.45ct Yellow Citrine, Square, VVS-VS

3.45ct Yellow Citrine, Square, VVS-VS

9 x 9 mm (calibrated)

$ 26.46

View Gem
2.83ct Violet Amethyst, Trillion, VVS-VS

2.83ct Violet Amethyst, Trillion, VVS-VS

10 x 10 mm (calibrated)

$ 16.44

View Gem
24.96ctw Multicolor Fossil Coral, Oval, Opaque

24.96ctw Multicolor Fossil Coral, Oval, Opaque

20.8 x 13.3 mm

$ 26.80

View Gem
0.53ct Purple Spinel, Round, VVS-VS

0.53ct Purple Spinel, Round, VVS-VS

4.8 mm

$ 27.80

View Gem
1.41ct Yellow Rutile Topaz, Pear Shape, Transparent

1.41ct Yellow Rutile Topaz, Pear Shape, Transparent

9 x 5.5 mm

$ 29.26

View Gem
9.07ct Brown Smoky Quartz, Round, VVS-VS

9.07ct Brown Smoky Quartz, Round, VVS-VS

14 mm (calibrated)

$ 14.91

View Gem
2.29ctw White Rainbow Moonstone, Oval, Transparent

2.29ctw White Rainbow Moonstone, Oval, Transparent

7 x 6 mm

$ 75.29

View Gem
4.49ctw Pink Malaya Garnet, Round, VS
Malaya Garnet Product Video (357103)

4.49ctw Pink Malaya Garnet, Round, VS

6 mm (calibrated)

$ 176.20

View Gem
4.92ctw Yellow Citrine, Oval, VVS

4.92ctw Yellow Citrine, Oval, VVS

10 x 8 mm (calibrated)

$ 26.95

View Gem
1.15ct Green Chrysoberyl, Oval, VVS-VS
Chrysoberyl Product Video (366384)

1.15ct Green Chrysoberyl, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 111.74

View Gem
2.20ctw White Sillimanite Cat'S Eye, Oval, Transparent

2.20ctw White Sillimanite Cat'S Eye, Oval, Transparent

7 x 5 mm (calibrated)

$ 6.61

View Gem
1 2 3
...
483
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 -> 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

All good

Posted By DouscheGift in August, 2025
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

Overall Rating -> 10 star ratings

I've purchased from here many times over the last decade+. I find the information easy to understand, helpful, and interesting. I have always been satisfied that I got exactly what I ordered. Pictures and descriptions are clear and unique to each stone.

Posted By Maggie in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

this site is awesome. I was able to look at the products think about purchasing and come back and find the same products. With the amount of inventory gem select has. Its awesome to be able to filter the way that they allow you too.

Posted By Tommyp in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I needed a very specific color of tourmaline and Gem Select had it. I had to get the client to agree and then ordered the stone. It arrived better than pictured and we all were very happy.

Posted By Tim W in February, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
Enlarged Gemstone Image