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
1.40ct Yellow Rutile Topaz, Marquise, Transparent

1.40ct Yellow Rutile Topaz, Marquise, Transparent

12.8 x 4.9 mm

$ 29.05

View Gem
1.94ct Yellow Rutile Topaz, Pear Shape, Transparent

1.94ct Yellow Rutile Topaz, Pear Shape, Transparent

9 x 7 mm (calibrated)

$ 40.26

View Gem
2.67ctw Yellow Beryl, Trillion, VVS

2.67ctw Yellow Beryl, Trillion, VVS

8 x 8 mm (calibrated)

$ 53.19

View Gem
1.21ct Purple Sapphire, Cushion, VS
Sapphire Product Video (447677)

1.21ct Purple Sapphire, Cushion, VS

6.6 x 5.3 mm

$ 638.10

View Gem
1.89ct Yellow Beryl, Round, VVS

1.89ct Yellow Beryl, Round, VVS

8 mm (calibrated)

$ 37.65

View Gem
0.08ct Black Diamond, Round, Opaque
Diamond Product Video (689103)

0.08ct Black Diamond, Round, Opaque

2.6 mm (calibrated)

$ 38.71

View Gem
0.15ctw White Diamond, Round, VVS-VS
Diamond Product Video (567399)

0.15ctw White Diamond, Round, VVS-VS

2.7 mm (calibrated)

$ 268.16

View Gem
0.29ct Pink Morganite, Round, VS

0.29ct Pink Morganite, Round, VS

4.7 mm

$ 12.04

View Gem
0.06ct Black Diamond, Round, Opaque

0.06ct Black Diamond, Round, Opaque

2.2 mm (calibrated)

$ 20.53

View Gem
0.75ct Pink Morganite, Oval, VVS-VS

0.75ct Pink Morganite, Oval, VVS-VS

7.1 x 5.2 mm

$ 31.13

View Gem
1.35ct Purple Spinel, Oval, VS

1.35ct Purple Spinel, Oval, VS

8.5 x 5.4 mm

$ 224.93

View Gem
0.09ctw Black Diamond, Round, Opaque

0.09ctw Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 26.15

View Gem
1.18ct Yellow Beryl, Oval, VVS-VS

1.18ct Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 29.38

View Gem
4.73ct White Topaz, Oval, VVS

4.73ct White Topaz, Oval, VVS

11 x 9 mm (calibrated)

$ 31.09

View Gem
1.48ct Purple Spinel, Cushion, VVS-VS

1.48ct Purple Spinel, Cushion, VVS-VS

7.4 x 6.3 mm

$ 147.41

View Gem
1.60ct Pink Morganite, Pear Shape, VVS-VS

1.60ct Pink Morganite, Pear Shape, VVS-VS

10.4 x 6.4 mm

$ 122.71

View Gem
1.58ct Yellow Beryl, Oval, VVS

1.58ct Yellow Beryl, Oval, VVS

9 x 6.6 mm

$ 37.77

View Gem
0.61ct Purple Spinel, Cushion, VVS

0.61ct Purple Spinel, Cushion, VVS

5.4 x 4.8 mm

$ 50.63

View Gem
9.59ctw Black Spinel, Round, Opaque

9.59ctw Black Spinel, Round, Opaque

10 mm (calibrated)

$ 36.77

View Gem
4.21ct Pink Morganite, Oval, Transparent

4.21ct Pink Morganite, Oval, Transparent

12.8 x 9.9 mm

$ 46.12

View Gem
4.15ct Pink Morganite, Oval, Transparent

4.15ct Pink Morganite, Oval, Transparent

12.2 x 9.2 mm

$ 47.69

View Gem
0.94ct Pink Morganite, Pear Shape, VS

0.94ct Pink Morganite, Pear Shape, VS

9.2 x 4.9 mm

$ 82.39

View Gem
0.03ct White Diamond, Round, VVS

0.03ct White Diamond, Round, VVS

2 mm (calibrated)

$ 68.48

View Gem
1.41ct Yellow Beryl, Trillion, VVS

1.41ct Yellow Beryl, Trillion, VVS

8.4 x 8 mm

$ 30.89

View Gem
1 2 3
...
39
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 love the products. I've bought them as gifts and people love my gifts

Posted By Love it! in February, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Will know more once order received

Posted By Jim in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

hassle free experience.

Posted By Jhidron in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

GemSelect offers excellent choices, prices & service- highly recommended! Unfortunately, prior to ordering a replacement gemstone, my jeweler neglected to mention it needed to be one that was a'cushion cuta' to fit the existing mount. Have yet to return/exchangea'

Posted By CJ in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Filters need to be improved but rest of website is great

Posted By Rock hound in December, 2025
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
→ View All GemSelect Reviews on Bizrate
Enlarged Gemstone Image