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
10.08Ctw Black Spinel, Round, Opaque

10.08Ctw Black Spinel, Round, Opaque

10 mm (calibrated)

$ 46.57

View Details
1.14Ct Salmon Pink Morganite, Oval, Vvs-Vs
Morganite Product Video (618802)

1.14Ct Salmon Pink Morganite, Oval, Vvs-Vs

8 x 6 mm (calibrated)

$ 528.20

View Details
1.48Ct Light Golden-Yellow Beryl, Oval, Vs

1.48Ct Light Golden-Yellow Beryl, Oval, Vs

9 x 7 mm (calibrated)

$ 35.52

View Details
1.62Ct Light Grayish Violet Spinel, Cushion, Vvs-Vs

1.62Ct Light Grayish Violet Spinel, Cushion, Vvs-Vs

6.7 x 6.2 mm

$ 121.96

View Details
17.73Ctw Black Spinel, Heart, Opaque

17.73Ctw Black Spinel, Heart, Opaque

13 x 13 mm (calibrated)

$ 70.21

View Details
0.50Ct Grey Green Cat's Eye Alexandrite, Oval, Transparent

0.50Ct Grey Green Cat's Eye Alexandrite, Oval, Transparent

5.8 x 4.3 mm

$ 125.00

View Details
2.13Ctw Light Gold Beryl, Oval, Vs

2.13Ctw Light Gold Beryl, Oval, Vs

8 x 6 mm (calibrated)

$ 51.12

View Details
0.36Ct Very Light Pink Morganite, Round, Vs-Si

0.36Ct Very Light Pink Morganite, Round, Vs-Si

5 mm (calibrated)

$ 18.00

View Details
0.56Ct Raspberry Pink Spinel, Cushion, Vs

0.56Ct Raspberry Pink Spinel, Cushion, Vs

4.9 x 4.4 mm

$ 122.00

View Details
1.07Ct Light Pear Green Chrysoberyl, Pear Shape, Vvs-Vs

1.07Ct Light Pear Green Chrysoberyl, Pear Shape, Vvs-Vs

7 x 5 mm (calibrated)

$ 150.24

View Details
0.64Ct Light Golden-Yellow Beryl, Oval, Vvs-Vs

0.64Ct Light Golden-Yellow Beryl, Oval, Vvs-Vs

7 x 5 mm (calibrated)

$ 19.20

View Details
4.82Ctw Clear White Topaz, Cushion, Vvs-Vs

4.82Ctw Clear White Topaz, Cushion, Vvs-Vs

4.6 x 4.6 mm

$ 31.81

View Details
1.19Ct Light Yellow Beryl, Trillion, Vs

1.19Ct Light Yellow Beryl, Trillion, Vs

8 x 8 mm (calibrated)

$ 34.27

View Details
4.70Ct Light Blue Aquamarine, Square, Vs-Si

4.70Ct Light Blue Aquamarine, Square, Vs-Si

10 x 10 mm (calibrated)

$ 451.20

View Details
8.40Ctw Black Spinel, Round, Opaque

8.40Ctw Black Spinel, Round, Opaque

10 mm (calibrated)

$ 33.26

View Details
1.26Ct Light Golden Morganite, Oval, Vs

1.26Ct Light Golden Morganite, Oval, Vs

8 x 6 mm (calibrated)

$ 59.75

View Details
0.89Ct Warm Yellow Beryl, Trillion, Vvs-Vs

0.89Ct Warm Yellow Beryl, Trillion, Vvs-Vs

7.8 x 7.6 mm

$ 21.36

View Details
5.49Ct Light Rose Pink Morganite, Pear Shape, Transparent

5.49Ct Light Rose Pink Morganite, Pear Shape, Transparent

16.4 x 9.8 mm

$ 76.02

View Details
0.52Ct Dark Red Spinel, Cushion, Vvs-Vs

0.52Ct Dark Red Spinel, Cushion, Vvs-Vs

5.4 x 4.4 mm

$ 52.00

View Details
1.55Ct Medium Purple Spinel, Oval, Vvs-Vs

1.55Ct Medium Purple Spinel, Oval, Vvs-Vs

7 x 6.7 mm

$ 311.00

View Details
2.74Ct Medium-Light Pink Morganite, Pear Shape, Transparent

2.74Ct Medium-Light Pink Morganite, Pear Shape, Transparent

12 x 8 mm (calibrated)

$ 37.93

View Details
0.88Ct Medium Grey Spinel, Cushion, Vvs-Vs

0.88Ct Medium Grey Spinel, Cushion, Vvs-Vs

5.8 x 4.7 mm

$ 88.00

View Details
0.69Ct Grey Green Cat's Eye Alexandrite, Oval, Opaque

0.69Ct Grey Green Cat's Eye Alexandrite, Oval, Opaque

6 x 4 mm (calibrated)

$ 172.50

View Details
1.74Ct Dijon Yellow Beryl, Oval, Vs

1.74Ct Dijon Yellow Beryl, Oval, Vs

9 x 7 mm (calibrated)

$ 50.11

View Details
1 2 3
...
127
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

Great prices!!! High quality gemstones.

Posted By Ricky in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I am filling a small treasure chest and picked a nice amethyst.

Posted By VinnyD in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

this site is awesome. I was able to look at the products think about purchasing and come back and find the same products. With the amount of inventory gem select has. Its awesome to be able to filter the way that they allow you too.

Posted By Tommyp in November, 2025
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 -> 9 star ratings

I think therea's no problem

Posted By Napoleon in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

So far, my experience was great...Thanks

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