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
4.86ct Pink Morganite, Oval, Transparent

4.86ct Pink Morganite, Oval, Transparent

13.1 x 10 mm

$ 48.41

View Gem
2.96ctw White Topaz, Cushion, VVS-VS

2.96ctw White Topaz, Cushion, VVS-VS

4.6 x 4.6 mm

$ 16.22

View Gem
3.23ct Yellow Rutile Topaz, Heart, Transparent

3.23ct Yellow Rutile Topaz, Heart, Transparent

9.9 x 9.4 mm

$ 67.02

View Gem
0.19ct Black Diamond, Square, Opaque

0.19ct Black Diamond, Square, Opaque

2.8 x 2.7 mm

$ 94.62

View Gem
0.02ct Black Diamond, Round, Opaque

0.02ct Black Diamond, Round, Opaque

1.9 mm (calibrated)

$ 15.94

View Gem
7.45ctw Black Spinel, Round, Opaque

7.45ctw Black Spinel, Round, Opaque

9.5 mm (calibrated)

$ 24.49

View Gem
0.98ct Pink Morganite, Pear Shape, VVS-VS

0.98ct Pink Morganite, Pear Shape, VVS-VS

10.4 x 5.7 mm

$ 59.05

View Gem
3.73ct Pink Morganite, Oval, Transparent

3.73ct Pink Morganite, Oval, Transparent

12 x 9.1 mm

$ 37.15

View Gem
3.15ctw Yellow Beryl, Round, VVS

3.15ctw Yellow Beryl, Round, VVS

8 mm (calibrated)

$ 62.75

View Gem
1.22ct Yellow Beryl, Trillion, VVS

1.22ct Yellow Beryl, Trillion, VVS

8 x 8 mm (calibrated)

$ 24.30

View Gem
1.57ct Yellow Beryl, Oval, VVS-VS

1.57ct Yellow Beryl, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 31.27

View Gem
2.92ctw White Topaz, Cushion, VVS-VS

2.92ctw White Topaz, Cushion, VVS-VS

4.6 x 4.5 mm

$ 15.99

View Gem
1.38ct Yellow Beryl, Trillion, VS

1.38ct Yellow Beryl, Trillion, VS

8 x 8 mm (calibrated)

$ 32.98

View Gem
10.40ct Blue Aquamarine, Emerald Cut, Translucent

10.40ct Blue Aquamarine, Emerald Cut, Translucent

18 x 9.9 mm

$ 215.80

View Gem
1.49ct Purple Spinel, Cushion, VVS-VS

1.49ct Purple Spinel, Cushion, VVS-VS

6 x 6 mm (calibrated)

$ 106.12

View Gem
0.92ct Yellow Beryl, Oval, VS

0.92ct Yellow Beryl, Oval, VS

8 x 6 mm (calibrated)

$ 22.91

View Gem
1.08ct Yellow Beryl, Trillion, VVS-VS

1.08ct Yellow Beryl, Trillion, VVS-VS

7 x 7 mm (calibrated)

$ 25.81

View Gem
7.59ctw White Topaz, Square, VVS

7.59ctw White Topaz, Square, VVS

5 x 5 mm (calibrated)

$ 64.03

View Gem
0.05ct Black Diamond, Round, Opaque

0.05ct Black Diamond, Round, Opaque

2.3 mm (calibrated)

$ 16.28

View Gem
6.08ct White Topaz, Oval, VVS

6.08ct White Topaz, Oval, VVS

12 x 10 mm (calibrated)

$ 40.37

View Gem
2.04ctw Yellow Beryl, Oval, VVS-VS

2.04ctw Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 40.64

View Gem
4.64ctw White Topaz, Cushion, VVS-VS

4.64ctw White Topaz, Cushion, VVS-VS

4.6 x 4.5 mm

$ 25.41

View Gem
1.17ct Yellow Beryl, Oval, VS

1.17ct Yellow Beryl, Oval, VS

8 x 6 mm (calibrated)

$ 23.31

View Gem
0.74ct Pink Morganite, Pear Shape, VVS-VS

0.74ct Pink Morganite, Pear Shape, VVS-VS

8.2 x 4.4 mm

$ 64.86

View Gem
1 2 3
...
72
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 found the filter options excellent. Yours was the third site I visited (asked chat got for reputable online sellers of loose gems) and the first I purchased from as I was able to easily find what I was looking for.

Posted By Kelly in May, 2026
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

Overall Rating -> 8 star ratings

Site worked well and helped me find a rock that matched what I was looking for. Well within budget and I trust it will show up, so that's definitely positive. Not much else to it. Satisfied.

Posted By Big Ricky in May, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

It was fine . Wish there had been more round stones to select from

Posted By Emm in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Easy to conduct search, good amount of stock to select from along with variety of prices.

Posted By Que in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

My experience was done with ease

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