X
Gemstone Search

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
1.44Ct Light Green Chrysoberyl, Emerald Cut, Vs
Chrysoberyl Product Video (373064)

1.44Ct Light Green Chrysoberyl, Emerald Cut, Vs

8 x 5 mm (calibrated)

$ 183.91

View Details
1.13Ct Very Light Pinkish Purple Spinel, Cushion, Vs

1.13Ct Very Light Pinkish Purple Spinel, Cushion, Vs

6.4 x 5.8 mm

$ 94.92

View Details
0.17Ctw I Diamond, Round, Vvs-Vs

0.17Ctw I Diamond, Round, Vvs-Vs

2.8 mm (calibrated)

$ 372.12

View Details
1.02Ct Light Golden Morganite, Oval, Vs

1.02Ct Light Golden Morganite, Oval, Vs

8 x 6 mm (calibrated)

$ 53.86

View Details
0.50Ct Grape Purple Spinel, Emerald Cut, Vvs

0.50Ct Grape Purple Spinel, Emerald Cut, Vvs

6.7 x 3.3 mm

$ 21.54

View Details
6.66Ct Medium Pink Morganite, Trillion, Transparent

6.66Ct Medium Pink Morganite, Trillion, Transparent

13 x 13 mm (calibrated)

$ 87.91

View Details
0.81Ct Warm White Topaz, Round, Vs
Topaz Product Video (691511)

0.81Ct Warm White Topaz, Round, Vs

5 mm (calibrated)

$ 5.69

View Details
0.03Ct Black Diamond, Round, Opaque

0.03Ct Black Diamond, Round, Opaque

1.9 mm

$ 10.08

View Details
1.49Ct Deep Lavender Spinel, Cushion, Vs

1.49Ct Deep Lavender Spinel, Cushion, Vs

6.7 x 5.5 mm

$ 112.18

View Details
0.24Ct Cognac Diamond, Round, Vs
Diamond Product Video (564618)

0.24Ct Cognac Diamond, Round, Vs

4 mm (calibrated)

$ 439.90

View Details
7.06Ctw Black Spinel, Round, Opaque

7.06Ctw Black Spinel, Round, Opaque

9 mm (calibrated)

$ 37.27

View Details
0.83Ct Light Orange Morganite, Oval, Vs

0.83Ct Light Orange Morganite, Oval, Vs

8 x 6 mm (calibrated)

$ 44.82

View Details
20.90Ctw Black Spinel, Oval, Opaque

20.90Ctw Black Spinel, Oval, Opaque

16 x 12 mm (calibrated)

$ 82.76

View Details
0.41Ct Light Earthy Yellow Beryl, Pear Shape, Vs

0.41Ct Light Earthy Yellow Beryl, Pear Shape, Vs

6.4 x 4.4 mm

$ 9.84

View Details
0.67Ct Grayish Violet Spinel, Cushion, Vvs-Vs

0.67Ct Grayish Violet Spinel, Cushion, Vvs-Vs

5.1 x 4.7 mm

$ 56.28

View Details
3.02Ctw Light Golden-Yellow Golden Beryl, Oval, Vs

3.02Ctw Light Golden-Yellow Golden Beryl, Oval, Vs

9.2 x 6.7 mm

$ 79.73

View Details
0.18Ct Light Blue Aquamarine, Round, Vs-Si

0.18Ct Light Blue Aquamarine, Round, Vs-Si

3.5 mm (calibrated)

$ 25.20

View Details
5.24Ct Light Greenish Blue Aquamarine, Oval, Vs-Si

5.24Ct Light Greenish Blue Aquamarine, Oval, Vs-Si

14 x 10 mm (calibrated)

$ 503.04

View Details
14.50Ctw Black Spinel, Cushion, Opaque

14.50Ctw Black Spinel, Cushion, Opaque

12 x 10 mm (calibrated)

$ 95.70

View Details
0.08Ctw Black Diamond, Round, Opaque

0.08Ctw Black Diamond, Round, Opaque

2 mm (calibrated)

$ 76.80

View Details
0.96Ct Medium Pink Morganite, Pear Shape, Vs

0.96Ct Medium Pink Morganite, Pear Shape, Vs

8 x 6 mm (calibrated)

$ 48.00

View Details
0.19Ctw Black Diamond, Square, Opaque

0.19Ctw Black Diamond, Square, Opaque

2.1 x 2.1 mm

$ 114.00

View Details
1.09Ct Light Lemon Yellow Chrysoberyl, Pear Shape, Vvs
Chrysoberyl Product Video (366558)

1.09Ct Light Lemon Yellow Chrysoberyl, Pear Shape, Vvs

7.9 x 5.5 mm

$ 153.04

View Details
1.72Ct Medium Yellow Chrysoberyl Cat's Eye, Oval, Translucent

1.72Ct Medium Yellow Chrysoberyl Cat's Eye, Oval, Translucent

7.5 x 5 mm

$ 61.92

View Details
1 2 3
...
42
Choose Page
1 - 186

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

Loved the price and the quality and the certification options which is the main reason why I buy. The guarantee is also a great reason to use gem select.

Posted By Sal in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I can pick and choose from large selection and find just what I need for .y projects, currently my cane.

Posted By Darkstar731 in July, 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

Good. I ts very user friendly.

Posted By Shalini in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Enjoy every moment

Posted By Ferns in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I have been very happy with my prior purchases and enjoy the website experience.

Posted By Trouble in November, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
Enlarged Gemstone Image