X
Gemstone Search
90,000+ Happy Customers
20+ Years In Business
Call Us Mon–Fri 8am–5pm

Your Details

Please fill in your email address

Please fill in a password

Forgot your password?

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
1.50ct Pink Strawberry Quartz, Round, Translucent

1.50ct Pink Strawberry Quartz, Round, Translucent

7 mm (calibrated)

$ 15.04

View Gem
2.34ct Purple Rhodolite Garnet, Oval, VS
Rhodolite Garnet Product Video (735253)

2.34ct Purple Rhodolite Garnet, Oval, VS

9 x 7 mm (calibrated)

$ 93.23

View Gem
0.47ct Yellow Citrine, Marquise, VVS

0.47ct Yellow Citrine, Marquise, VVS

8.1 x 4.1 mm

$ 3.28

View Gem
28.11ct Multicolor Labradorite, Round, Translucent

28.11ct Multicolor Labradorite, Round, Translucent

25.3 mm

$ 62.15

View Gem
1.72ctw Red Pyrope Garnet, Heart, VVS-VS

1.72ctw Red Pyrope Garnet, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 13.19

View Gem
20.82ct Pink Rhodochrosite, Fancy, Opaque

20.82ct Pink Rhodochrosite, Fancy, Opaque

23.7 x 14.4 mm

$ 57.03

View Gem
0.71ct Yellow Citrine, Pear Shape, VVS

0.71ct Yellow Citrine, Pear Shape, VVS

7 x 5 mm (calibrated)

$ 3.54

View Gem
1.87ct Orange Moonstone, Trillion, Translucent

1.87ct Orange Moonstone, Trillion, Translucent

8 x 8 mm (calibrated)

$ 3.73

View Gem
6.89ct Yellow Citrine, Emerald Cut, VVS-VS

6.89ct Yellow Citrine, Emerald Cut, VVS-VS

14 x 10 mm (calibrated)

$ 52.84

View Gem
1.33ct Orange Sphalerite, Oval, SI

1.33ct Orange Sphalerite, Oval, SI

6.9 x 5.6 mm

$ 66.23

View Gem
4.02ct Yellow Citrine, Oval, VS

4.02ct Yellow Citrine, Oval, VS

11.8 x 9.1 mm

$ 30.84

View Gem
0.26ct Pink Morganite, Round, VS

0.26ct Pink Morganite, Round, VS

4.5 mm (calibrated)

$ 10.79

View Gem
1.01ct Pink Morganite, Round, VS

1.01ct Pink Morganite, Round, VS

7 mm (calibrated)

$ 39.23

View Gem
12.84ctw Multicolor Labradorite, Pear Shape, Translucent

12.84ctw Multicolor Labradorite, Pear Shape, Translucent

14 x 10 mm (calibrated)

$ 28.39

View Gem
5.01ct Pink Rose Quartz, Emerald Cut, Transparent

5.01ct Pink Rose Quartz, Emerald Cut, Transparent

10.5 x 10.4 mm

$ 27.45

View Gem
4.11ct Multicolor Coral, Oval, Translucent

4.11ct Multicolor Coral, Oval, Translucent

14.9 x 11.3 mm

$ 13.50

View Gem
17.52ct Violet Charoite, Cushion, Opaque

17.52ct Violet Charoite, Cushion, Opaque

16 x 16 mm (calibrated)

$ 28.97

View Gem
1.63ct Pink Strawberry Quartz, Round, Translucent

1.63ct Pink Strawberry Quartz, Round, Translucent

8 mm (calibrated)

$ 12.50

View Gem
2.79ctw Purple Rhodolite Garnet, Oval, VS

2.79ctw Purple Rhodolite Garnet, Oval, VS

5 x 3 mm (calibrated)

$ 45.38

View Gem
1.43ct Pink Tourmaline, Emerald Cut, VVS-VS

1.43ct Pink Tourmaline, Emerald Cut, VVS-VS

6.7 x 5.4 mm

$ 103.40

View Gem
0.25ct Green Kornerupine, Baguette, VVS

0.25ct Green Kornerupine, Baguette, VVS

5.5 x 2.8 mm

$ 13.70

View Gem
2.08ct Violet Amethyst, Trillion, VVS-VS

2.08ct Violet Amethyst, Trillion, VVS-VS

9 x 9 mm (calibrated)

$ 14.50

View Gem
13.42ct Green Druzy Variscite, Fancy, Opaque

13.42ct Green Druzy Variscite, Fancy, Opaque

30.3 x 14.1 mm

$ 20.45

View Gem
1.68ctw Blue Kyanite, Oval, VS-SI

1.68ctw Blue Kyanite, Oval, VS-SI

7 x 5 mm (calibrated)

$ 46.02

View Gem
1 2 3
...
1314
Choose Page
1 - 1895

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

Easy process.

Posted By Crafty Seabee in March, 2026
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 -> 10 star ratings

Over pretty well experience the your website no complaints about it very easy reliable service provided

Posted By Blas in January, 2026
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

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

Great selection. Maybe too great i kept adding and deleting stuff because i found better looking ones

Posted By Edsor works in October, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
Enlarged Gemstone Image