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
15.28Ctw Black Spinel, Round, Opaque

15.28Ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 60.50

View Details
1.69Ct Flamingo Pink Morganite, Pear Shape, Vs-Si
Morganite Product Video (457467)

1.69Ct Flamingo Pink Morganite, Pear Shape, Vs-Si

11.5 x 6.4 mm

$ 169.00

View Details
0.17Ct Baby Blue Aquamarine, Round, Vs-Si

0.17Ct Baby Blue Aquamarine, Round, Vs-Si

3.7 mm

$ 28.56

View Details
0.15Ctw Black Diamond, Square, Opaque

0.15Ctw Black Diamond, Square, Opaque

2 x 2 mm (calibrated)

$ 90.00

View Details
0.84Ct Light Gold Beryl, Oval, Vvs

0.84Ct Light Gold Beryl, Oval, Vvs

8 x 6 mm (calibrated)

$ 20.16

View Details
1.25Ct Light Pink Morganite, Round, Vs

1.25Ct Light Pink Morganite, Round, Vs

7 mm (calibrated)

$ 58.50

View Details
1.65Ct Medium Yellow Beryl, Round, Vvs

1.65Ct Medium Yellow Beryl, Round, Vvs

8 mm (calibrated)

$ 39.60

View Details
1.53Ct Light Pink Morganite, Pear Shape, Vs

1.53Ct Light Pink Morganite, Pear Shape, Vs

10.7 x 6.2 mm

$ 141.37

View Details
1.03Ct Light Golden-Yellow Beryl, Trillion, Vvs

1.03Ct Light Golden-Yellow Beryl, Trillion, Vvs

7.3 x 7 mm

$ 24.72

View Details
1.09Ct Black Diamond, Square, Opaque
Diamond Product Video (677846)

1.09Ct Black Diamond, Square, Opaque

4.6 x 4.4 mm

$ 748.13

View Details
0.50Ct Golden Orange Beryl, Pear Shape, Vs

0.50Ct Golden Orange Beryl, Pear Shape, Vs

6.9 x 4.6 mm

$ 12.00

View Details
9.22Ctw Black Spinel, Round, Opaque

9.22Ctw Black Spinel, Round, Opaque

10 mm (calibrated)

$ 42.60

View Details
0.12Ct Black Diamond, Square, Opaque

0.12Ct Black Diamond, Square, Opaque

2.8 x 2.7 mm

$ 60.00

View Details
0.04Ct Black Diamond, Round, Opaque

0.04Ct Black Diamond, Round, Opaque

2 mm (calibrated)

$ 38.40

View Details
0.66Ct Salmon Pink Morganite, Pear Shape, Vvs

0.66Ct Salmon Pink Morganite, Pear Shape, Vvs

8 x 5.4 mm

$ 33.00

View Details
0.92Ct Mellow Yellow Beryl, Trillion, Vvs-Vs

0.92Ct Mellow Yellow Beryl, Trillion, Vvs-Vs

7 x 7 mm (calibrated)

$ 22.08

View Details
6.33Ct Flamingo Pink Morganite, Oval, Transparent

6.33Ct Flamingo Pink Morganite, Oval, Transparent

12 x 10 mm (calibrated)

$ 75.96

View Details
0.55Ct Medium Purple Spinel, Cushion, Vvs-Vs

0.55Ct Medium Purple Spinel, Cushion, Vvs-Vs

5.2 x 4.6 mm

$ 55.00

View Details
0.50Ct Medium Purple Spinel, Cushion, Vs

0.50Ct Medium Purple Spinel, Cushion, Vs

4.6 x 3.8 mm

$ 42.00

View Details
9.51Ctw Black Spinel, Round, Opaque

9.51Ctw Black Spinel, Round, Opaque

10 mm (calibrated)

$ 43.93

View Details
0.23Ct Very Light Pink Morganite, Round, Vvs-Vs

0.23Ct Very Light Pink Morganite, Round, Vvs-Vs

4.5 mm (calibrated)

$ 11.50

View Details
1.46Ct Bumblebee Yellow Beryl, Trillion, Vs

1.46Ct Bumblebee Yellow Beryl, Trillion, Vs

8 x 8 mm (calibrated)

$ 42.05

View Details
0.29Ct Light Pink Morganite, Round, Vs

0.29Ct Light Pink Morganite, Round, Vs

4.7 mm

$ 14.50

View Details
0.91Ct Medium-Dark Purple Spinel, Oval, Vvs

0.91Ct Medium-Dark Purple Spinel, Oval, Vvs

7 x 5 mm (calibrated)

$ 88.09

View Details
1 2 3
...
179
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

I love the product and the details about each of them.

Posted By Love It! in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

This is the first time I have used this site. I was dissatisfied with the quality of gems and supplies elsewhere and decided to try GemSelect. They are awesome! I was thrilled to see the variety and the great web performance. There was the ability to search for information as well as gems. Things like the clarity rating system and caret weight of the gems. I have always loved making things and I have just started to make jewelry as a business. However I have never made a ring before and have always wanted to. On GemSelect I was able to find good quality gems to use in my creations. I am so glad the website is so easy to use. Thank you GemSelect.

Posted By PickyShopper in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I feel Gemselect is a trustworthy company to buy from

Posted By Becky in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

They have a wonderful selection of gems of all sorts, shapes, cuts, and quality. I am very particular about the quality of stones I buy, and found many with VVS clarity and excellent cut and polish. I am thrilled with each of the stones I purchased, and would definitely recommend GemSelect to everyone.

Posted By Debsarabs in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

It's always a pleasure doing business with Gem Select. Outstanding products ant very reasonable prices. Thank You One and All.

Posted By G.W. or Bakyow in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great! Affordable

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