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
0.26ct Pink Morganite, Round, VVS-VS

0.26ct Pink Morganite, Round, VVS-VS

4.3 mm

$ 10.79

View Gem
2.90ct Pink Morganite, Round, Transparent

2.90ct Pink Morganite, Round, Transparent

9 mm (calibrated)

$ 31.77

View Gem
1.20ct Green Chrysoberyl, Pear Shape, VVS
Chrysoberyl Product Video (366577)

1.20ct Green Chrysoberyl, Pear Shape, VVS

8 x 6 mm (calibrated)

$ 127.13

View Gem
1.32ct Pink Morganite, Round, VS

1.32ct Pink Morganite, Round, VS

7 mm (calibrated)

$ 51.28

View Gem
1.23ct Yellow Beryl, Round, VVS-VS

1.23ct Yellow Beryl, Round, VVS-VS

7 mm (calibrated)

$ 26.95

View Gem
1.54ct Pink Morganite, Pear Shape, VVS-VS

1.54ct Pink Morganite, Pear Shape, VVS-VS

10.7 x 6.3 mm

$ 118.11

View Gem
0.24ct Yellow Color-Change Sapphire, Baguette, VVS-VS

0.24ct Yellow Color-Change Sapphire, Baguette, VVS-VS

4.2 x 2.8 mm

$ 19.92

View Gem
7.27ct Black Spinel, Round, Opaque

7.27ct Black Spinel, Round, Opaque

12 mm (calibrated)

$ 23.90

View Gem
4.17ctw White Topaz, Square, VVS-VS

4.17ctw White Topaz, Square, VVS-VS

4 x 4 mm (calibrated)

$ 33.58

View Gem
1.24ct Purple Spinel, Cushion, VVS

1.24ct Purple Spinel, Cushion, VVS

6.7 x 5.8 mm

$ 123.50

View Gem
0.72ct Pink Morganite, Pear Shape, VVS-VS

0.72ct Pink Morganite, Pear Shape, VVS-VS

8 x 5 mm (calibrated)

$ 43.38

View Gem
27.85ctw Black Spinel, Baguette, Opaque

27.85ctw Black Spinel, Baguette, Opaque

20.2 x 10 mm

$ 83.22

View Gem
1.56ct Purple Spinel, Cushion, VVS-VS

1.56ct Purple Spinel, Cushion, VVS-VS

6.5 x 6.2 mm

$ 111.10

View Gem
0.29ctw Black Diamond, Square, Opaque

0.29ctw Black Diamond, Square, Opaque

2.5 x 2.4 mm

$ 144.42

View Gem
4.57ctw White Topaz, Cushion, VVS-VS

4.57ctw White Topaz, Cushion, VVS-VS

4.6 x 4.6 mm

$ 25.04

View Gem
1.53ct Yellow Beryl, Round, VVS

1.53ct Yellow Beryl, Round, VVS

8 mm (calibrated)

$ 30.48

View Gem
2.91ctw White Topaz, Cushion, VVS-VS

2.91ctw White Topaz, Cushion, VVS-VS

4.6 x 4.5 mm

$ 15.94

View Gem
0.77ct Pink Morganite, Pear Shape, VVS-VS

0.77ct Pink Morganite, Pear Shape, VVS-VS

9.7 x 4.4 mm

$ 67.49

View Gem
3.12ctw White Topaz, Cushion, VVS-VS

3.12ctw White Topaz, Cushion, VVS-VS

4.6 x 4.6 mm

$ 17.09

View Gem
5.73ct Yellow Rutile Topaz, Heart, Transparent

5.73ct Yellow Rutile Topaz, Heart, Transparent

11 x 11 mm (calibrated)

$ 118.90

View Gem
4.81ctw White Topaz, Square, VS-SI

4.81ctw White Topaz, Square, VS-SI

3.5 x 3.5 mm

$ 35.05

View Gem
0.73ct Yellow Beryl, Oval, VVS-VS

0.73ct Yellow Beryl, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 14.54

View Gem
2.20ctw Yellow Beryl, Oval, VVS-VS

2.20ctw Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 43.82

View Gem
1.11ct Pink Morganite, Pear Shape, VS

1.11ct Pink Morganite, Pear Shape, VS

7.6 x 6 mm

$ 48.65

View Gem
1 2 3
...
163
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

I liked the selection of gems, and price. I did not like your PayPal process. I already have a PP account and you want me to sign up for another.

Posted By CLTCJH in May, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

I've purchased things from GemSelect before. What you see is what you get, which is not always the case with gem sites online. You can find some good value with gem select, and I will buy from them again.

Posted By Meyeusername in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I have a beautiful emerald I purchased from a company names gemselect and they are awesome! You should try them out?

Posted By Lynn in September, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

They have literally everything on this website! The prices are also pretty good, I was able to find plenty of nice stones that I could afford!

Posted By JC in March, 2026
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 able to find what I've been looking for.

Posted By Tree Dog in April, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
Enlarged Gemstone Image