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
1.21Ct Medium-Light Yellow Beryl, Oval, Vvs-Vs

1.21Ct Medium-Light Yellow Beryl, Oval, Vvs-Vs

8 x 6 mm (calibrated)

$ 31.94

View Details
1.53Ct Grape Violet Tone Spinel, Cushion, Vs
Spinel Product Video (531509)

1.53Ct Grape Violet Tone Spinel, Cushion, Vs

6.7 x 5.9 mm

$ 316.00

View Details
1.06Ct Golden Beryl, Oval, Vs

1.06Ct Golden Beryl, Oval, Vs

8 x 6 mm (calibrated)

$ 31.80

View Details
2.78Ct Brownish Yellow Beryl, Oval, Vvs

2.78Ct Brownish Yellow Beryl, Oval, Vvs

11 x 9 mm (calibrated)

$ 73.39

View Details
0.09Ctw Black Diamond, Round, Opaque

0.09Ctw Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 31.50

View Details
0.67Ct Medium Light-Pink Spinel, Cushion, Vs

0.67Ct Medium Light-Pink Spinel, Cushion, Vs

5.7 x 4.4 mm

$ 46.90

View Details
0.12Ct Light Green Alexandrite, Oval, Vvs-Vs

0.12Ct Light Green Alexandrite, Oval, Vvs-Vs

4 x 3 mm (calibrated)

$ 100.80

View Details
1.24Ct Light Violet Spinel, Cushion, Vs

1.24Ct Light Violet Spinel, Cushion, Vs

6.5 x 6.2 mm

$ 75.08

View Details
13.13Ctw Black Spinel, Round, Opaque

13.13Ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 49.22

View Details
1.29Ct Light Yellow Beryl, Trillion, Vvs-Vs

1.29Ct Light Yellow Beryl, Trillion, Vvs-Vs

8 x 8 mm (calibrated)

$ 30.96

View Details
1.78Ctw Multicolor Andalusite, Round, Vs

1.78Ctw Multicolor Andalusite, Round, Vs

3.7 mm

$ 117.48

View Details
3.16Ctw Clear White Topaz, Cushion, Vvs-Vs

3.16Ctw Clear White Topaz, Cushion, Vvs-Vs

4.6 x 4.6 mm

$ 20.86

View Details
0.13Ctw Black Diamond, Square, Opaque

0.13Ctw Black Diamond, Square, Opaque

2.2 x 2.1 mm

$ 78.00

View Details
1.54Ct Light Pink Morganite, Oval, Vvs

1.54Ct Light Pink Morganite, Oval, Vvs

8.5 x 6.5 mm

$ 162.62

View Details
2.13Ctw Salmon Pink Morganite, Oval, Vvs-Vs

2.13Ctw Salmon Pink Morganite, Oval, Vvs-Vs

8 x 6 mm (calibrated)

$ 140.58

View Details
0.22Ct Black Diamond, Round, Opaque

0.22Ct Black Diamond, Round, Opaque

3.5 mm (calibrated)

$ 126.10

View Details
4.50Ct Rose Pink Morganite, Heart, Transparent

4.50Ct Rose Pink Morganite, Heart, Transparent

14 x 14 mm (calibrated)

$ 62.32

View Details
3.19Ctw Clear White Topaz, Cushion, Vvs-Vs

3.19Ctw Clear White Topaz, Cushion, Vvs-Vs

4.6 x 4.5 mm

$ 21.06

View Details
4.08Ct Clear White Topaz, Oval, Vvs

4.08Ct Clear White Topaz, Oval, Vvs

11 x 9 mm (calibrated)

$ 37.70

View Details
0.06Ct Black Diamond, Square, Opaque

0.06Ct Black Diamond, Square, Opaque

1.9 x 1.9 mm

$ 36.00

View Details
0.58Ct Light Violet Spinel, Round, Vvs-Vs

0.58Ct Light Violet Spinel, Round, Vvs-Vs

5 mm (calibrated)

$ 35.02

View Details
7.07Ctw Black Spinel, Round, Opaque

7.07Ctw Black Spinel, Round, Opaque

9 mm (calibrated)

$ 37.33

View Details
0.79Ct Light Golden Morganite, Oval, Vs

0.79Ct Light Golden Morganite, Oval, Vs

7.5 x 5.7 mm

$ 41.71

View Details
0.09Ctw Black Diamond, Round, Opaque

0.09Ctw Black Diamond, Round, Opaque

2.2 mm (calibrated)

$ 49.14

View Details
1 2 3
...
61
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

the selection is good as are the prices

Posted By Old man in August, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

If you have motion picture, then I will be more satisfied with.

Posted By Ray in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I loved it! Extensive inventory, great prices, I definitely will be buying from here again!

Posted By Lex in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I can pick and choose from large selection and find just what I need for .y projects, currently my cane.

Posted By Darkstar731 in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

It's mostly good, only some item's are easier to find through the search than the menu

Posted By Wayne in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Easy picking, fast checkout, secure shipping. Cana't ask for anything more than efficiency and a good price.

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