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
0.13Ct Yellow Green Alexandrite, Pear Shape, Vs

0.13Ct Yellow Green Alexandrite, Pear Shape, Vs

3.9 x 2.8 mm

$ 109.20

View Details
2.30Ctw Medium Yellow Beryl, Trillion, Vvs-Vs

2.30Ctw Medium Yellow Beryl, Trillion, Vvs-Vs

8 x 8 mm (calibrated)

$ 73.92

View Details
2.34Ct Intense Purple Sapphire, Oval, Vs-Si
Sapphire Product Video (746899)

2.34Ct Intense Purple Sapphire, Oval, Vs-Si

9.5 x 7.8 mm

$ 936.00

View Details
0.02Ct Black Diamond, Round, Opaque

0.02Ct Black Diamond, Round, Opaque

2 mm (calibrated)

$ 19.20

View Details
0.69Ct Medium Pink Spinel, Cushion, Vs

0.69Ct Medium Pink Spinel, Cushion, Vs

5.3 x 4.8 mm

$ 62.10

View Details
0.08Ctw Black Diamond, Round, Opaque

0.08Ctw Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 76.80

View Details
1.44Ct Light Golden-Yellow Beryl, Oval, Vvs-Vs

1.44Ct Light Golden-Yellow Beryl, Oval, Vvs-Vs

9 x 7 mm (calibrated)

$ 33.12

View Details
2.98Ctw Clear White Topaz, Cushion, Vvs-Vs

2.98Ctw Clear White Topaz, Cushion, Vvs-Vs

4.6 x 4.6 mm

$ 19.67

View Details
0.09Ctw Black Diamond, Round, Opaque

0.09Ctw Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 31.50

View Details
0.19Ctw I Diamond, Round, Vvs-Vs

0.19Ctw I Diamond, Round, Vvs-Vs

3 mm (calibrated)

$ 415.91

View Details
0.23Ct Black Diamond, Square, Opaque

0.23Ct Black Diamond, Square, Opaque

3 x 3 mm (calibrated)

$ 138.00

View Details
1.75Ct Light Yellow Beryl, Round, Vs

1.75Ct Light Yellow Beryl, Round, Vs

8 mm (calibrated)

$ 42.00

View Details
1.12Ct Light Purple Spinel, Cushion, Vs

1.12Ct Light Purple Spinel, Cushion, Vs

7 x 5 mm (calibrated)

$ 95.09

View Details
8.26Ct Light Pink Morganite, Pear Shape, Translucent

8.26Ct Light Pink Morganite, Pear Shape, Translucent

16 x 12 mm (calibrated)

$ 109.03

View Details
0.71Ct Battleship Grey Spinel, Oval, Vvs-Vs

0.71Ct Battleship Grey Spinel, Oval, Vvs-Vs

5.9 x 5.2 mm

$ 71.00

View Details
0.20Ctw I Diamond, Round, Vvs-Vs

0.20Ctw I Diamond, Round, Vvs-Vs

2.9 mm (calibrated)

$ 437.80

View Details
0.02Ct Black Diamond, Round, Opaque

0.02Ct Black Diamond, Round, Opaque

2 mm (calibrated)

$ 19.20

View Details
0.17Ctw J Diamond, Round, Vvs-Vs

0.17Ctw J Diamond, Round, Vvs-Vs

2.8 mm (calibrated)

$ 366.16

View Details
0.68Ct Black Diamond, Square, Opaque
Diamond Product Video (678135)

0.68Ct Black Diamond, Square, Opaque

4.2 x 4.1 mm

$ 408.00

View Details
1.36Ct Very Light Pink Morganite, Pear Shape, Vs

1.36Ct Very Light Pink Morganite, Pear Shape, Vs

8 x 6 mm (calibrated)

$ 125.66

View Details
1.34Ct Tuscany Yellow Beryl, Cushion, Vvs

1.34Ct Tuscany Yellow Beryl, Cushion, Vvs

8.8 x 6.5 mm

$ 38.59

View Details
1.27Ct Light Yellow Beryl, Oval, Vvs-Vs

1.27Ct Light Yellow Beryl, Oval, Vvs-Vs

8 x 6 mm (calibrated)

$ 33.53

View Details
1.46Ct Light Pink Morganite, Round, Vs

1.46Ct Light Pink Morganite, Round, Vs

7 mm (calibrated)

$ 68.33

View Details
3.76Ctw Multicolor Andalusite, Round, Vs

3.76Ctw Multicolor Andalusite, Round, Vs

3.5 mm (calibrated)

$ 199.18

View Details
1 2 3
...
182
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 -> 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 -> 9 star ratings

Been using them for years! Very satisfied with the products.

Posted By PI SC in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Love, and have always loved, your website.

Posted By Aberabic in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great website, easy to navigate, and loads quickly. Have bought here before, very pleased!

Posted By SallyO in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Easy and functional

Posted By Dessa in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Very good place to buy gemstones

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