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
7.42ct Yellow Rutile Topaz, Pear Shape, Transparent

7.42ct Yellow Rutile Topaz, Pear Shape, Transparent

16.4 x 10.4 mm

$ 153.97

View Gem
5.58ct Pink Morganite, Oval, Transparent

5.58ct Pink Morganite, Oval, Transparent

14 x 10 mm (calibrated)

$ 23.16

View Gem
5.33ct Pink Morganite, Trillion, Transparent

5.33ct Pink Morganite, Trillion, Transparent

12 x 12 mm (calibrated)

$ 58.40

View Gem
0.97ct Yellow Beryl, Oval, VVS

0.97ct Yellow Beryl, Oval, VVS

8 x 6 mm (calibrated)

$ 19.32

View Gem
1.33ct Yellow Beryl, Oval, VS

1.33ct Yellow Beryl, Oval, VS

9 x 7 mm (calibrated)

$ 26.49

View Gem
3.53ct Pink Morganite, Marquise, Transparent

3.53ct Pink Morganite, Marquise, Transparent

16.4 x 7 mm

$ 38.68

View Gem
1.01ct Green Chrysoberyl, Marquise, VVS
Chrysoberyl Product Video (366327)

1.01ct Green Chrysoberyl, Marquise, VVS

9 x 4.5 mm

$ 98.14

View Gem
1.28ct Purple Sapphire, Cushion, VS
Sapphire Product Video (448577)

1.28ct Purple Sapphire, Cushion, VS

6.9 x 5.7 mm

$ 675.94

View Gem
0.85ct Yellow Morganite, Pear Shape, VS

0.85ct Yellow Morganite, Pear Shape, VS

8 x 6 mm (calibrated)

$ 37.25

View Gem
1.46ct Pink Morganite, Pear Shape, VVS-VS

1.46ct Pink Morganite, Pear Shape, VVS-VS

9.3 x 7.4 mm

$ 63.98

View Gem
1.36ct Purple Spinel, Pear Shape, VS
Spinel Product Video (349455)

1.36ct Purple Spinel, Pear Shape, VS

8.3 x 5.6 mm

$ 225.76

View Gem
0.51ct Purple Spinel, Baguette, VVS-VS

0.51ct Purple Spinel, Baguette, VVS-VS

8 x 3.2 mm

$ 61.20

View Gem
0.03ct Black Diamond, Round, Opaque

0.03ct Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 10.27

View Gem
3.20ct Yellow Rutile Topaz, Pear Shape, Transparent

3.20ct Yellow Rutile Topaz, Pear Shape, Transparent

13.2 x 7.9 mm

$ 66.40

View Gem
4.83ctw White Topaz, Round, VS

4.83ctw White Topaz, Round, VS

7.5 mm (calibrated)

$ 18.74

View Gem
1.13ct Purple Spinel, Cushion, VVS-VS
Spinel Product Video (720487)

1.13ct Purple Spinel, Cushion, VVS-VS

6.4 x 5.8 mm

$ 168.82

View Gem
7.55ctw White Topaz, Square, VVS-VS

7.55ctw White Topaz, Square, VVS-VS

5 x 5 mm (calibrated)

$ 60.00

View Gem
0.03ct Black Diamond, Round, Opaque

0.03ct Black Diamond, Round, Opaque

2 mm (calibrated)

$ 10.27

View Gem
2.09ct Yellow Golden Beryl, Round, VVS

2.09ct Yellow Golden Beryl, Round, VVS

9 mm (calibrated)

$ 50.38

View Gem
5.55ct Turquoise Aquamarine, Oval, VS-SI

5.55ct Turquoise Aquamarine, Oval, VS-SI

14 x 10 mm (calibrated)

$ 115.16

View Gem
0.84ct Pink Morganite, Pear Shape, VVS

0.84ct Pink Morganite, Pear Shape, VVS

8.5 x 5.3 mm

$ 50.61

View Gem
1.47ct Purple Sapphire, Cushion, VS
Sapphire Product Video (448538)

1.47ct Purple Sapphire, Cushion, VS

7.1 x 5.6 mm

$ 776.27

View Gem
3.81ct White Topaz, Cushion, VVS-VS
Topaz Product Video (677917)

3.81ct White Topaz, Cushion, VVS-VS

10 x 8.6 mm

$ 26.56

View Gem
0.17ct White Diamond, Round, VVS-VS

0.17ct White Diamond, Round, VVS-VS

3.5 mm (calibrated)

$ 285.42

View Gem
1 2 3
...
82
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

Easy to use. No issues. Large selection of gems.

Posted By CLTCJH in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

love the site, the experience and the products.

Posted By Ckingpots in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Would have bought an indigo and selenite, but neither listed. But, you do offer quite a large assortment otherwise.

Posted By JD in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Easy and good price

Posted By Bry_guy in March, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Fast snd easy to find what I was looking for

Posted By Bawb in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

The website has a good selection, the interface is very intuitive.

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