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?

Natural Untreated Gemstones

Discover genuine untreated gemstones selected for natural beauty, rarity, and authenticity.

Natural Untreated Gemstones Weight
Natural Untreated Gemstones Size
Natural Untreated Gemstones Clarity
Natural Untreated Gemstones Price
Natural Untreated Gemstones Treatment

Size Explained

Choose Size or Size Range
For Example: 6-7
For Example: 8-9
Bi-color Natural Untreated Gemstones
Black Natural Untreated Gemstones
Blue Natural Untreated Gemstones
Brown Natural Untreated Gemstones
Golden Natural Untreated Gemstones
Gray Natural Untreated Gemstones
Green Natural Untreated Gemstones
Multicolor Natural Untreated Gemstones
Orange Natural Untreated Gemstones
Pink Natural Untreated Gemstones
Purple Natural Untreated Gemstones
Red Natural Untreated Gemstones
Turquoise Natural Untreated Gemstones
Violet Natural Untreated Gemstones
White Natural Untreated Gemstones
Yellow Natural Untreated Gemstones
Single
Pairs
Lots
Faceted
Cabochons
Clear All
1.95ct Yellow Rutile Topaz, Pear Shape, Transparent

1.95ct Yellow Rutile Topaz, Pear Shape, Transparent

8 x 8 mm (calibrated)

$ 40.46

View Gem
1.21ct Yellow Chrysoberyl, Pear Shape, VVS-VS
Chrysoberyl Product Video (367464)

1.21ct Yellow Chrysoberyl, Pear Shape, VVS-VS

9.4 x 5.5 mm

$ 140.15

View Gem
0.14ctw White Diamond, Round, VVS-VS

0.14ctw White Diamond, Round, VVS-VS

2.7 mm (calibrated)

$ 250.28

View Gem
0.24ct Black Diamond, Square, Opaque

0.24ct Black Diamond, Square, Opaque

3.2 x 2.9 mm

$ 119.52

View Gem
1.46ct Yellow Beryl, Oval, VVS-VS

1.46ct Yellow Beryl, Oval, VVS-VS

9.1 x 6.7 mm

$ 29.08

View Gem
1.27ct Purple Spinel, Cushion, VS

1.27ct Purple Spinel, Cushion, VS

6.9 x 5.9 mm

$ 89.49

View Gem
0.76ct Yellow Beryl, Oval, VVS-VS

0.76ct Yellow Beryl, Oval, VVS-VS

6.9 x 5.2 mm

$ 15.14

View Gem
0.75ct Gray Spinel, Cushion, VVS-VS

0.75ct Gray Spinel, Cushion, VVS-VS

5.4 x 5.4 mm

$ 43.58

View Gem
4.45ct Pink Morganite, Pear Shape, Transparent

4.45ct Pink Morganite, Pear Shape, Transparent

14 x 10 mm (calibrated)

$ 48.75

View Gem
2.67ct Yellow Chrysoberyl Cat'S Eye, Oval, Translucent

2.67ct Yellow Chrysoberyl Cat'S Eye, Oval, Translucent

9.4 x 6.1 mm

$ 79.78

View Gem
0.18ctw White Diamond, Round, VVS-VS

0.18ctw White Diamond, Round, VVS-VS

2.8 mm (calibrated)

$ 321.79

View Gem
1.09ct Red Spinel, Cushion, VS
Spinel Product Video (741431)

1.09ct Red Spinel, Cushion, VS

5.9 x 5.2 mm

$ 117.61

View Gem
1.76ct White Topaz, Marquise, VS

1.76ct White Topaz, Marquise, VS

11.8 x 5.1 mm

$ 9.64

View Gem
1.10ct Purple Sapphire, Cushion, VS-SI
Sapphire Product Video (447680)

1.10ct Purple Sapphire, Cushion, VS-SI

6 x 5.5 mm

$ 527.35

View Gem
9.64ctw Black Spinel, Round, Opaque

9.64ctw Black Spinel, Round, Opaque

10 mm (calibrated)

$ 36.96

View Gem
0.62ct Pink Morganite, Pear Shape, VVS-VS

0.62ct Pink Morganite, Pear Shape, VVS-VS

7.3 x 4.5 mm

$ 37.36

View Gem
1.79ctw Multicolor Andalusite, Oval, VS

1.79ctw Multicolor Andalusite, Oval, VS

5 x 3 mm (calibrated)

$ 95.62

View Gem
1.18ct Pink Morganite, Pear Shape, VVS-VS

1.18ct Pink Morganite, Pear Shape, VVS-VS

10.8 x 6 mm

$ 129.28

View Gem
3.19ct Yellow Rutile Topaz, Pear Shape, Transparent

3.19ct Yellow Rutile Topaz, Pear Shape, Transparent

12.4 x 7.3 mm

$ 66.19

View Gem
0.58ct Purple Spinel, Cushion, VVS

0.58ct Purple Spinel, Cushion, VVS

5.5 x 3.9 mm

$ 40.44

View Gem
0.58ct Pink Spinel, Cushion, VVS

0.58ct Pink Spinel, Cushion, VVS

5 x 4.3 mm

$ 40.44

View Gem
3.29ctw White Topaz, Cushion, VVS-VS

3.29ctw White Topaz, Cushion, VVS-VS

4.6 x 4.6 mm

$ 18.03

View Gem
5.60ct White Topaz, Oval, VVS

5.60ct White Topaz, Oval, VVS

12 x 10 mm (calibrated)

$ 37.18

View Gem
3.03ct Pink Morganite, Round, Transparent

3.03ct Pink Morganite, Round, Transparent

9.5 mm (calibrated)

$ 34.82

View Gem
1 2 3
...
91
Choose Page
1 - 188

Why Buy Natural Untreated Gemstones from GemSelect?

Why Choose Untreated Gemstones?

Untreated gemstones are valued for their natural color and clarity without artificial enhancement. Many buyers prefer these gems for authenticity, rarity, and long-term value.

Natural Loose Untreated Gems Online

Shop loose untreated gemstones online at GemSelect with confidence. Browse sapphires, rubies, spinels, aquamarine, garnet, tourmaline, and more with full disclosure.

Natural Untreated Gemstones for Jewelry and Collecting

Untreated Gemstones for Jewelry

Natural untreated gems are excellent for rings, earrings, pendants, and custom jewelry. Their original beauty makes every piece unique and meaningful.

Popular Untreated Gemstone Types

Popular choices include untreated sapphire, ruby, spinel, garnet, tourmaline, zircon, aquamarine, and many collector stones in a wide range of colors.

Certified Natural Gemstones

Many buyers choose untreated gemstones with gemological reports for added confidence. Certification can confirm identity and indicate whether treatments are present.

Collector Quality Untreated Gems

Collectors appreciate untreated gemstones because naturally fine examples are rarer than treated material. These stones can be especially desirable when color and clarity are strong.

Calibrated Untreated Gemstones

We also offer calibrated untreated gemstones in popular sizes suitable for standard jewelry settings, making custom designs easier and faster.

Worldwide Shipping from GemSelect

GemSelect offers secure online ordering, detailed product images, and worldwide delivery so you can shop untreated gemstones from anywhere.

Learn more about gemstone treatments, identification, and care on our Gemstone Information Pages.

FAQs

What does untreated gemstone mean?

An untreated gemstone has not undergone enhancement processes such as heating, dyeing, filling, coating, or diffusion to improve appearance.

Are untreated gemstones more valuable?

Often yes, especially in sapphire, ruby, and other premium gems where fine untreated stones are rarer than treated examples.

How can I verify a gemstone is untreated?

Independent laboratory certification is the best way to verify whether a gemstone is natural and untreated.

Which gemstones are commonly sold untreated?

Spinel, garnet, zircon, tourmaline, aquamarine, and some sapphires or rubies are often available untreated depending on source and quality.

Are all untreated gemstones natural?

Natural untreated gemstones are mined stones that have not been enhanced after cutting. Always buy from trusted sellers with clear disclosure.

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

Navigating the site was very easy and the photos of the exact gem you would be purchasing was well done.

Posted By HVeeder in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I love the ability to choose from many options of shapes, gemstone type, color, and so forth. It is fun!

Posted By Geof in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

GemSelect is always my first choice for purchasing gemstones. The fact that the gems are always exactly as described and pictured on the website has earned my trust many times over. Even when I don't buy, I still love browsing all the beautiful stones. My new favorites are the bright green Tsavorites!

Posted By Lkcisneros in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

selection was broad and the check out was quick. Great site

Posted By JC Karl in September, 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 -> 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
→ View All GemSelect Reviews on Bizrate
Enlarged Gemstone Image