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
1.60ct Pink Morganite, Round, VS

1.60ct Pink Morganite, Round, VS

7.5 mm (calibrated)

$ 122.71

View Gem
4.28ct Pink Morganite, Round, Transparent

4.28ct Pink Morganite, Round, Transparent

10 mm (calibrated)

$ 46.90

View Gem
1.12ct Purple Spinel, Cushion, VS

1.12ct Purple Spinel, Cushion, VS

6.4 x 5.9 mm

$ 61.40

View Gem
1.28ct Pink Morganite, Round, VVS-VS

1.28ct Pink Morganite, Round, VVS-VS

7 mm (calibrated)

$ 49.72

View Gem
2.98ct Yellow Rutile Topaz, Oval, Transparent

2.98ct Yellow Rutile Topaz, Oval, Transparent

12.3 x 6.8 mm

$ 61.84

View Gem
0.94ct Pink Morganite, Pear Shape, VVS-VS

0.94ct Pink Morganite, Pear Shape, VVS-VS

9.9 x 5 mm

$ 51.49

View Gem
9.78ctw Black Spinel, Round, Opaque

9.78ctw Black Spinel, Round, Opaque

10 mm (calibrated)

$ 37.50

View Gem
0.51ct Pink Morganite, Round, VVS-VS

0.51ct Pink Morganite, Round, VVS-VS

6 mm (calibrated)

$ 22.86

View Gem
1.05ct Purple Spinel, Pear Shape, VVS-VS

1.05ct Purple Spinel, Pear Shape, VVS-VS

6.6 x 5.3 mm

$ 117.72

View Gem
2.33ct Yellow Beryl, Oval, VVS

2.33ct Yellow Beryl, Oval, VVS

10 x 8 mm (calibrated)

$ 55.69

View Gem
0.18ctw White Diamond, Round, VVS-VS
Diamond Product Video (565145)

0.18ctw White Diamond, Round, VVS-VS

3 mm (calibrated)

$ 327.04

View Gem
1.11ct Purple Spinel, Cushion, VVS-VS

1.11ct Purple Spinel, Cushion, VVS-VS

6.3 x 5.5 mm

$ 39.69

View Gem
2.48ctw Multicolor Andalusite, Oval, VS

2.48ctw Multicolor Andalusite, Oval, VS

5 x 3 mm (calibrated)

$ 132.48

View Gem
0.61ct Yellow Beryl, Oval, VS

0.61ct Yellow Beryl, Oval, VS

7 x 5 mm (calibrated)

$ 11.64

View Gem
1.55ct Yellow Beryl, Oval, VS

1.55ct Yellow Beryl, Oval, VS

9 x 7 mm (calibrated)

$ 37.05

View Gem
1.00ct Gray Cat'S Eye Alexandrite, Oval, Opaque

1.00ct Gray Cat'S Eye Alexandrite, Oval, Opaque

4.5 x 6.6 mm

$ 207.50

View Gem
1.65ct Purple Spinel, Cushion, VVS-VS

1.65ct Purple Spinel, Cushion, VVS-VS

7.6 x 6.9 mm

$ 117.51

View Gem
0.06ctw White Diamond, Round, VVS

0.06ctw White Diamond, Round, VVS

2 mm (calibrated)

$ 136.95

View Gem
1.68ct Pink Morganite, Round, Transparent

1.68ct Pink Morganite, Round, Transparent

8 mm (calibrated)

$ 18.41

View Gem
0.60ct Purple Spinel, Baguette, VVS-VS

0.60ct Purple Spinel, Baguette, VVS-VS

8.6 x 3.1 mm

$ 72.00

View Gem
1.28ct Purple Spinel, Cushion, VS
Spinel Product Video (725701)

1.28ct Purple Spinel, Cushion, VS

6.2 x 5.6 mm

$ 75.16

View Gem
6.20ct Yellow Rutile Topaz, Pear Shape, Transparent

6.20ct Yellow Rutile Topaz, Pear Shape, Transparent

15 x 10 mm (calibrated)

$ 128.65

View Gem
1.59ct Yellow Beryl, Cushion, VVS

1.59ct Yellow Beryl, Cushion, VVS

9 x 7 mm (calibrated)

$ 34.84

View Gem
2.90ct Brown Rutile Topaz, Pear Shape, Transparent

2.90ct Brown Rutile Topaz, Pear Shape, Transparent

11.6 x 8.5 mm

$ 60.18

View Gem
1 2 3
...
76
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 was able to find what I've been looking for.

Posted By Tree Dog in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Enjoy every moment

Posted By Ferns in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Easy and functional

Posted By Dessa in March, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Very good and simple exchange

Posted By Waylon in March, 2026
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

the selection is good as are the prices

Posted By Old man in August, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
Enlarged Gemstone Image