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
12.12Ct Purple Silver Star Sapphire, Oval, Opaque
Star Sapphire Product Video (470845)

12.12Ct Purple Silver Star Sapphire, Oval, Opaque

12.3 x 11.4 mm

$ 559.94

View Details
2.36Ctw Multicolor Andalusite, Oval, Vvs-Vs

2.36Ctw Multicolor Andalusite, Oval, Vvs-Vs

6 x 4 mm (calibrated)

$ 155.76

View Details
0.56Ct Medium-Light Pink Morganite, Pear Shape, Vvs-Vs

0.56Ct Medium-Light Pink Morganite, Pear Shape, Vvs-Vs

6 x 6 mm (calibrated)

$ 40.66

View Details
1.17Ct Light Golden-Yellow Beryl, Oval, Vs

1.17Ct Light Golden-Yellow Beryl, Oval, Vs

8 x 6 mm (calibrated)

$ 28.08

View Details
1.31Ct Dijon Yellow Beryl, Oval, Vvs-Vs

1.31Ct Dijon Yellow Beryl, Oval, Vvs-Vs

8.3 x 6.3 mm

$ 34.58

View Details
0.15Ctw I Diamond, Round, Vvs-Vs

0.15Ctw I Diamond, Round, Vvs-Vs

2.6 mm (calibrated)

$ 323.09

View Details
5.02Ct Light Aqua Blue Aquamarine, Oval, Vs
Aquamarine Product Video (412449)

5.02Ct Light Aqua Blue Aquamarine, Oval, Vs

12.6 x 9.5 mm

$ 1,153.00

View Details
1.51Ct Flamingo Pink Morganite, Pear Shape, Vs

1.51Ct Flamingo Pink Morganite, Pear Shape, Vs

9.9 x 6.4 mm

$ 139.52

View Details
1.40Ct Light Honey Yellow Beryl, Trillion, Vs

1.40Ct Light Honey Yellow Beryl, Trillion, Vs

8 x 8 mm (calibrated)

$ 40.32

View Details
1.08Ct Dark Purple Spinel, Pear Shape, Vvs-Vs

1.08Ct Dark Purple Spinel, Pear Shape, Vvs-Vs

7.5 x 6 mm

$ 216.00

View Details
0.94Ct Very Light Honey Yellow Beryl, Emerald Cut, Vs

0.94Ct Very Light Honey Yellow Beryl, Emerald Cut, Vs

7.2 x 5.3 mm

$ 24.82

View Details
0.66Ct Reddish Orange Spinel, Cushion, Vs

0.66Ct Reddish Orange Spinel, Cushion, Vs

5.1 x 4.3 mm

$ 55.44

View Details
8.05Ctw Clear White Topaz, Square, Vvs-Vs
Topaz Product Video (341515)

8.05Ctw Clear White Topaz, Square, Vvs-Vs

5 x 5 mm (calibrated)

$ 78.11

View Details
0.06Ct Black Diamond, Round, Opaque

0.06Ct Black Diamond, Round, Opaque

2.4 mm (calibrated)

$ 24.74

View Details
0.93Ct Medium Purple Spinel, Oval, Vs

0.93Ct Medium Purple Spinel, Oval, Vs

6.7 x 5.1 mm

$ 92.08

View Details
1.59Ct Tuscany Yellow Beryl, Trillion, Vvs

1.59Ct Tuscany Yellow Beryl, Trillion, Vvs

9.1 x 8.6 mm

$ 45.79

View Details
0.95Ct Deep Magenta Spinel, Oval, Vs-Si

0.95Ct Deep Magenta Spinel, Oval, Vs-Si

6.3 x 6 mm

$ 237.50

View Details
7.55Ctw White Topaz, Emerald Cut, Vvs

7.55Ctw White Topaz, Emerald Cut, Vvs

10 x 8 mm (calibrated)

$ 41.53

View Details
1.52Ct Bumblebee Yellow Beryl, Round, Vvs

1.52Ct Bumblebee Yellow Beryl, Round, Vvs

8 mm (calibrated)

$ 36.48

View Details
0.42Ct Black Diamond, Square, Opaque
Diamond Product Video (678127)

0.42Ct Black Diamond, Square, Opaque

3.8 x 3.7 mm

$ 252.00

View Details
1.46Ct Light Golden-Yellow Beryl, Round, Vvs

1.46Ct Light Golden-Yellow Beryl, Round, Vvs

7 mm (calibrated)

$ 38.54

View Details
0.71Ct Pinkish Purple Spinel, Cushion, Vs

0.71Ct Pinkish Purple Spinel, Cushion, Vs

5 x 5 mm (calibrated)

$ 59.64

View Details
12.44Ctw Black Spinel, Round, Opaque

12.44Ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 46.63

View Details
12.96Ct Light Bluish Green Cat's Eye Aquamarine, Oval, Transparent/Translucent
Cat's Eye Aquamarine Product Video (333927)

12.96Ct Light Bluish Green Cat's Eye Aquamarine, Oval, Transparent/Translucent

16.3 x 11.5 mm

$ 256.61

View Details
1 2 3
...
106
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

This is the first time I have used this site. I was dissatisfied with the quality of gems and supplies elsewhere and decided to try GemSelect. They are awesome! I was thrilled to see the variety and the great web performance. There was the ability to search for information as well as gems. Things like the clarity rating system and caret weight of the gems. I have always loved making things and I have just started to make jewelry as a business. However I have never made a ring before and have always wanted to. On GemSelect I was able to find good quality gems to use in my creations. I am so glad the website is so easy to use. Thank you GemSelect.

Posted By PickyShopper in April, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

the gems were smaller than I thought but I was at fault for not reading the complete discrimination

Posted By Tim in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Good selection prices are reasonable!

Posted By ToRa62 in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Great prices!!! High quality gemstones.

Posted By Ricky in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Enjoy viewing the selections. Excellent product

Posted By ToRa.62 in April, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

The website was easy to use and there were a lot of good options, I was satisfied.

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