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
0.86Ct Tuscany Yellow Beryl, Oval, Vs

0.86Ct Tuscany Yellow Beryl, Oval, Vs

8 x 6 mm (calibrated)

$ 20.64

View Details
3.85Ct White Topaz, Oval, Vvs-Vs

3.85Ct White Topaz, Oval, Vvs-Vs

10 x 8 mm (calibrated)

$ 25.42

View Details
4.41Ct Light Greenish Yellow Cat's Eye Beryl, Oval, Translucent

4.41Ct Light Greenish Yellow Cat's Eye Beryl, Oval, Translucent

12 x 8 mm (calibrated)

$ 927.53

View Details
4.80Ctw Warm White Topaz, Square, Vvs-Vs

4.80Ctw Warm White Topaz, Square, Vvs-Vs

4.2 x 4.2 mm

$ 46.57

View Details
11.99Ctw Black Spinel, Round, Opaque

11.99Ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 47.48

View Details
0.84Ct Plum-Grey Spinel, Cushion, Vvs-Vs

0.84Ct Plum-Grey Spinel, Cushion, Vvs-Vs

6.2 x 5 mm

$ 36.19

View Details
1.10Ct Light Grape Purple Spinel, Cushion, Vvs-Vs

1.10Ct Light Grape Purple Spinel, Cushion, Vvs-Vs

5.6 x 5.5 mm

$ 111.17

View Details
3.95Ctw Medium-Light Yellow Golden Beryl, Oval, Vvs

3.95Ctw Medium-Light Yellow Golden Beryl, Oval, Vvs

10 x 8 mm (calibrated)

$ 130.36

View Details
1.00Ctw White Topaz, Oval, Vvs

1.00Ctw White Topaz, Oval, Vvs

6 x 4 mm (calibrated)

$ 8.40

View Details
1.20Ct Medium-Dark Purple Sapphire, Pear Shape, Vs
Sapphire Product Video (447795)

1.20Ct Medium-Dark Purple Sapphire, Pear Shape, Vs

7.6 x 5.6 mm

$ 762.44

View Details
2.63Ctw Multicolor Andalusite, Oval, Vs

2.63Ctw Multicolor Andalusite, Oval, Vs

5 x 3 mm (calibrated)

$ 169.27

View Details
6.11Ctw Clear White Topaz, Emerald Cut, Vs

6.11Ctw Clear White Topaz, Emerald Cut, Vs

8 x 8 mm (calibrated)

$ 48.40

View Details
1.67Ct Light Gold Beryl, Oval, Vvs-Vs

1.67Ct Light Gold Beryl, Oval, Vvs-Vs

9 x 7 mm (calibrated)

$ 38.41

View Details
5.09Ct Very Light Golden-Brown Rutile Topaz, Oval, Transparent

5.09Ct Very Light Golden-Brown Rutile Topaz, Oval, Transparent

14 x 10 mm (calibrated)

$ 127.25

View Details
5.86Ct Medium Pink Morganite, Pear Shape, Transparent

5.86Ct Medium Pink Morganite, Pear Shape, Transparent

15 x 10 mm (calibrated)

$ 77.35

View Details
5.61Ct Clear White Topaz, Oval, Vvs-Vs

5.61Ct Clear White Topaz, Oval, Vvs-Vs

12.1 x 9.2 mm

$ 44.44

View Details
0.04Ct Black Diamond, Round, Opaque

0.04Ct Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 16.50

View Details
1.06Ct Light Purple Spinel, Pear Shape, Vvs-Vs

1.06Ct Light Purple Spinel, Pear Shape, Vvs-Vs

7.6 x 5.4 mm

$ 146.92

View Details
1.02Ct Light Pink Morganite, Pear Shape, Vs

1.02Ct Light Pink Morganite, Pear Shape, Vs

9.3 x 5.5 mm

$ 134.64

View Details
8.46Ctw Clear White Topaz, Square, Vvs-Vs

8.46Ctw Clear White Topaz, Square, Vvs-Vs

5.3 x 5.2 mm

$ 82.08

View Details
1.16Ct Bumblebee Yellow Beryl, Cushion, Vvs

1.16Ct Bumblebee Yellow Beryl, Cushion, Vvs

8 x 6 mm (calibrated)

$ 33.41

View Details
1.26Ct Very Light Grape Purple Spinel, Cushion, Vvs

1.26Ct Very Light Grape Purple Spinel, Cushion, Vvs

6.5 x 6.2 mm

$ 99.79

View Details
12.96Ctw Black Spinel, Round, Opaque

12.96Ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 48.59

View Details
1.16Ct Light Pink Morganite, Pear Shape, Vvs-Vs

1.16Ct Light Pink Morganite, Pear Shape, Vvs-Vs

9.7 x 6.2 mm

$ 107.18

View Details
1 2 3
...
157
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

hassle free experience.

Posted By Jhidron in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Always find more niche sizes/shapes as my unconventional designs require from this website. Recommending to fellow designers in the creative atmosphere on the usual, specially due to the quality and certification of gems.

Posted By Sina in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I could see the actual gem I was buying

Posted By Bugs in December, 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

Overall Rating -> 10 star ratings

Great site for finding specific stones and sizes for individual pieces of jewelry

Posted By Designer in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I was looking for high-quality amethyst on this site, and I was able to compare size, color, and weight in detail before making a purchase.

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