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
1.54ct Purple Spinel, Cushion, VS

1.54ct Purple Spinel, Cushion, VS

7.2 x 6.2 mm

$ 105.28

View Gem
0.75ct Yellow Morganite, Pear Shape, VS

0.75ct Yellow Morganite, Pear Shape, VS

7.8 x 5.6 mm

$ 32.87

View Gem
0.26ctw White Diamond, Round, VVS-VS
Diamond Product Video (567447)

0.26ctw White Diamond, Round, VVS-VS

3.2 mm

$ 464.82

View Gem
0.26ctw Black Diamond, Round, Opaque

0.26ctw Black Diamond, Round, Opaque

3 mm (calibrated)

$ 123.69

View Gem
0.71ct Yellow Morganite, Oval, VVS-VS

0.71ct Yellow Morganite, Oval, VVS-VS

7.5 x 5.4 mm

$ 31.82

View Gem
1.17ct Pink Morganite, Pear Shape, VS

1.17ct Pink Morganite, Pear Shape, VS

8 x 6 mm (calibrated)

$ 102.55

View Gem
4.81ct White Topaz, Round, VVS-VS

4.81ct White Topaz, Round, VVS-VS

10 mm (calibrated)

$ 26.35

View Gem
0.50ct Purple Spinel, Cushion, VS

0.50ct Purple Spinel, Cushion, VS

4.8 x 3.6 mm

$ 34.86

View Gem
2.39ct Yellow Golden Beryl, Round, VVS

2.39ct Yellow Golden Beryl, Round, VVS

9 mm (calibrated)

$ 52.37

View Gem
1.01ct Violet Spinel, Oval, VS

1.01ct Violet Spinel, Oval, VS

6.4 x 5.4 mm

$ 113.24

View Gem
1.07ct Yellow Golden Beryl, Oval, VS

1.07ct Yellow Golden Beryl, Oval, VS

8.2 x 6.3 mm

$ 29.32

View Gem
0.60ct Purple Spinel, Round, VS

0.60ct Purple Spinel, Round, VS

5 mm (calibrated)

$ 25.24

View Gem
2.75ctw White Topaz, Cushion, VVS-VS

2.75ctw White Topaz, Cushion, VVS-VS

4.6 x 4.6 mm

$ 15.07

View Gem
4.05ctw Multicolor Andalusite, Round, VS
Andalusite Product Video (382328)

4.05ctw Multicolor Andalusite, Round, VS

3.3 mm

$ 178.07

View Gem
1.30ct Pink Morganite, Oval, VS

1.30ct Pink Morganite, Oval, VS

8.7 x 6.6 mm

$ 99.70

View Gem
1.18ct Pink Morganite, Oval, VS

1.18ct Pink Morganite, Oval, VS

8 x 6 mm (calibrated)

$ 90.49

View Gem
5.79ct Turquoise Aquamarine, Oval, Translucent
Aquamarine Product Video (729959)

5.79ct Turquoise Aquamarine, Oval, Translucent

16.1 x 9.7 mm

$ 120.14

View Gem
2.31ctw Yellow Golden Beryl, Oval, VS

2.31ctw Yellow Golden Beryl, Oval, VS

8 x 6 mm (calibrated)

$ 63.28

View Gem
1.02ct Green Chrysoberyl, Pear Shape, VVS
Chrysoberyl Product Video (366562)

1.02ct Green Chrysoberyl, Pear Shape, VVS

7.6 x 5.6 mm

$ 118.87

View Gem
0.27ct Yellow Diamond, Round, VS
Diamond Product Video (564608)

0.27ct Yellow Diamond, Round, VS

4 mm (calibrated)

$ 492.91

View Gem
1.54ct Pink Morganite, Oval, VVS

1.54ct Pink Morganite, Oval, VVS

8.5 x 6.5 mm

$ 134.97

View Gem
0.55ct Pink Spinel, Cushion, VVS-VS

0.55ct Pink Spinel, Cushion, VVS-VS

4.9 x 4.5 mm

$ 38.35

View Gem
2.26ctw Multicolor Andalusite, Round, VS

2.26ctw Multicolor Andalusite, Round, VS

4 mm (calibrated)

$ 123.80

View Gem
0.21ctw White Diamond, Round, VVS-VS
Diamond Product Video (567453)

0.21ctw White Diamond, Round, VVS-VS

3 mm (calibrated)

$ 375.43

View Gem
1 2 3
...
176
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 loved it! Extensive inventory, great prices, I definitely will be buying from here again!

Posted By Lex in April, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

First time using this website. It was both exciting finding things in my price range and things Iam gonna save up for and use in other pieces. I love that the picture of the gem is the exact gem I'll be buying. I haven't tested the gems yes but they said they sold me 100% natural gems.

Posted By Salvo in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

My current project is something BLUE . Opal earrings with matching tennis bracelet for her wedding. The opals and sixty two sapphires VVS & VS are AMAZINGLY BEAUTIFUL. The private jewelers were impressed by the clarity and inclusion free of the sapphires . I want to say thank you for the High quality sapphires that I purchased for my daughtera's wedding.

Posted By My real name Dean or Wandering about in May, 2026
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

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

Wonderful purchase, can't wait to see the stone.

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