90,000+Happy Customers
20+Years
WorldwideShipping
Cart
Free Report Included
Worldwide Shipping
30 Day Returns
Help Center Shipping Payment and Checkout Returns Certificates Contact Us
Home › Gemstones › Natural Untreated Gemstones

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
3.49ct Orange Sunstone, Oval, Transparent

3.49ct Orange Sunstone, Oval, Transparent

11 x 9 mm (calibrated)

$ 21.00

View Gem
1.83ctw Green Peridot, Round, VS

1.83ctw Green Peridot, Round, VS

4 mm (calibrated)

$ 20.05

View Gem
3.61ct Multicolor Labradorite, Marquise, Translucent

3.61ct Multicolor Labradorite, Marquise, Translucent

14 x 7 mm (calibrated)

$ 7.98

View Gem
0.78ct Yellow Beryl, Pear Shape, VVS-VS

0.78ct Yellow Beryl, Pear Shape, VVS-VS

8.2 x 5.3 mm

$ 17.09

View Gem
1.38ct Brown Color-Change Garnet, Oval, VVS-VS

1.38ct Brown Color-Change Garnet, Oval, VVS-VS

7.2 x 5.9 mm

$ 110.25

View Gem
0.59ct Yellow Sphalerite, Oval, VS-SI

0.59ct Yellow Sphalerite, Oval, VS-SI

5.3 x 4.3 mm

$ 29.38

View Gem
0.93ct Yellow Citrine, Trillion, VS

0.93ct Yellow Citrine, Trillion, VS

7 x 7 mm (calibrated)

$ 7.13

View Gem
0.37ct Yellow Chrysoberyl Cat'S Eye, Oval, Translucent

0.37ct Yellow Chrysoberyl Cat'S Eye, Oval, Translucent

4.1 x 3.8 mm

$ 11.06

View Gem
1.42ct Yellow Citrine, Emerald Cut, VS

1.42ct Yellow Citrine, Emerald Cut, VS

8 x 6 mm (calibrated)

$ 11.31

View Gem
1.82ct Green Tourmaline, Oval, Transparent

1.82ct Green Tourmaline, Oval, Transparent

8 x 6 mm (calibrated)

$ 19.94

View Gem
12.19ct Brown Tiger'S Eye, Baguette, Opaque

12.19ct Brown Tiger'S Eye, Baguette, Opaque

18 x 13 mm (calibrated)

$ 12.14

View Gem
12.18ct Multicolor Quartz With Marcasite, Oval, Transparent

12.18ct Multicolor Quartz With Marcasite, Oval, Transparent

20.4 x 12.2 mm

$ 80.07

View Gem
2.20ct Violet Amethyst, Square, VS

2.20ct Violet Amethyst, Square, VS

8 x 8 mm (calibrated)

$ 12.05

View Gem
2.88ct Violet Amethyst, Pear Shape, VS

2.88ct Violet Amethyst, Pear Shape, VS

13 x 9 mm (calibrated)

$ 22.09

View Gem
0.72ct Green Peridot, Oval, VVS-VS

0.72ct Green Peridot, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 10.04

View Gem
5.43ctw Yellow Citrine, Oval, VS

5.43ctw Yellow Citrine, Oval, VS

10 x 8 mm (calibrated)

$ 29.75

View Gem
17.97ctw Green Amazonite, Marquise, Opaque

17.97ctw Green Amazonite, Marquise, Opaque

19.9 x 10.1 mm

$ 14.33

View Gem
1.21ct Red Rhodolite Garnet, Emerald Cut, VS

1.21ct Red Rhodolite Garnet, Emerald Cut, VS

6 x 6 mm (calibrated)

$ 45.19

View Gem
15.09ct Green Maw-Sit-Sit, Baguette, Opaque

15.09ct Green Maw-Sit-Sit, Baguette, Opaque

14 x 12 mm (calibrated)

$ 33.07

View Gem
14.58ctw Green Amazonite, Marquise, Opaque

14.58ctw Green Amazonite, Marquise, Opaque

17.6 x 9.3 mm

$ 11.61

View Gem
1.08ct White Sillimanite Cat'S Eye, Oval, Transparent

1.08ct White Sillimanite Cat'S Eye, Oval, Transparent

6.1 x 5.5 mm

$ 4.30

View Gem
1.44ct Yellow Sphene, Oval, Transparent

1.44ct Yellow Sphene, Oval, Transparent

6.9 x 6 mm

$ 7.17

View Gem
8.40ctw Black Spinel, Round, Opaque

8.40ctw Black Spinel, Round, Opaque

10 mm (calibrated)

$ 27.61

View Gem
1.85ct Orange Zircon, Oval, VVS

1.85ct Orange Zircon, Oval, VVS

7.6 x 5.8 mm

$ 40.74

View Gem
1 2 3
...
124
Choose Page
1 - 1857

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 love the ability to choose from many options of shapes, gemstone type, color, and so forth. It is fun!

Posted By Geof in November, 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

The process was pleasant, I chose to purchase the stone traditional to the month of March as it is the month in which I was born.

Posted By Maharishi in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Recomendado Totalmente Los Productos Se Entregaron A Tiempo

Posted By Alexis in May, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

The purchasing process is fairly quick and straightforward and for me user friendly so it probably took more or less than 3 minutes to purchase and pay for the items. I wish there was a discount offer for multiple items to encourage us buyers to purchase more an incentive and add more sales in your end. Besides that, it's been a great purchasing experience and will continue to shop as I am a repeat customer and have bought from your store many times before. Thank you.

Posted By Emmanuel in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Easy process.

Posted By Crafty Seabee in March, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
Enlarged Gemstone Image