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
2.13ctw Yellow Beryl, Oval, VVS-VS

2.13ctw Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 46.67

View Gem
1.32ct Purple Spinel, Cushion, VS

1.32ct Purple Spinel, Cushion, VS

6.6 x 6.3 mm

$ 104.13

View Gem
0.88ct Yellow Beryl, Cushion, VVS

0.88ct Yellow Beryl, Cushion, VVS

6 x 6 mm (calibrated)

$ 21.03

View Gem
2.08ctw Multicolor Andalusite, Oval, VS-SI

2.08ctw Multicolor Andalusite, Oval, VS-SI

6 x 4 mm (calibrated)

$ 102.55

View Gem
0.06ct White Diamond, Marquise, VVS

0.06ct White Diamond, Marquise, VVS

4 x 2 mm (calibrated)

$ 208.54

View Gem
1.73ct Pink Morganite, Pear Shape, VS

1.73ct Pink Morganite, Pear Shape, VS

10.2 x 6.7 mm

$ 132.68

View Gem
3.45ctw Multicolor Andalusite, Round, VS

3.45ctw Multicolor Andalusite, Round, VS

3.5 mm (calibrated)

$ 151.69

View Gem
3.88ct Pink Morganite, Round, Transparent

3.88ct Pink Morganite, Round, Transparent

10 mm (calibrated)

$ 42.08

View Gem
0.20ctw White Diamond, Round, VVS-VS
Diamond Product Video (565154)

0.20ctw White Diamond, Round, VVS-VS

3 mm (calibrated)

$ 302.81

View Gem
1.46ct Yellow Beryl, Round, VS

1.46ct Yellow Beryl, Round, VS

7 mm (calibrated)

$ 29.08

View Gem
0.91ct Yellow Beryl, Trillion, VVS

0.91ct Yellow Beryl, Trillion, VVS

7 x 7 mm (calibrated)

$ 18.13

View Gem
0.16ct Black Diamond, Square, Opaque

0.16ct Black Diamond, Square, Opaque

2.7 x 2.5 mm

$ 79.68

View Gem
3.74ctw Multicolor Andalusite, Oval, VS-SI
Andalusite Product Video (206738)

3.74ctw Multicolor Andalusite, Oval, VS-SI

6 x 4 mm (calibrated)

$ 184.39

View Gem
1.34ct Yellow Golden Beryl, Pear Shape, VVS-VS

1.34ct Yellow Golden Beryl, Pear Shape, VVS-VS

9 x 6 mm (calibrated)

$ 32.30

View Gem
8.40ctw Black Spinel, Round, Opaque

8.40ctw Black Spinel, Round, Opaque

10 mm (calibrated)

$ 27.61

View Gem
1.18ct Purple Spinel, Cushion, VS

1.18ct Purple Spinel, Cushion, VS

6.4 x 5.9 mm

$ 117.53

View Gem
1.23ct Yellow Beryl, Trillion, VVS

1.23ct Yellow Beryl, Trillion, VVS

8 x 8 mm (calibrated)

$ 24.50

View Gem
1.05ct Pink Morganite, Pear Shape, VVS-VS

1.05ct Pink Morganite, Pear Shape, VVS-VS

8.9 x 5.7 mm

$ 80.53

View Gem
1.55ct Yellow Beryl, Round, VVS

1.55ct Yellow Beryl, Round, VVS

8 mm (calibrated)

$ 30.88

View Gem
0.96ct Yellow Morganite, Pear Shape, VVS-VS

0.96ct Yellow Morganite, Pear Shape, VVS-VS

8 x 6 mm (calibrated)

$ 57.85

View Gem
1.09ctw White Chrysoberyl Cat'S Eye, Oval, Translucent

1.09ctw White Chrysoberyl Cat'S Eye, Oval, Translucent

4.5 x 4.3 mm

$ 32.57

View Gem
25.51ctw Black Spinel, Baguette, Opaque
Spinel Product Video (372537)

25.51ctw Black Spinel, Baguette, Opaque

17.6 x 8.2 mm

$ 200.68

View Gem
0.14ctw White Diamond, Round, VVS-VS

0.14ctw White Diamond, Round, VVS-VS

2.7 mm (calibrated)

$ 254.36

View Gem
3.13ctw Multicolor Andalusite, Round, VS
Andalusite Product Video (381954)

3.13ctw Multicolor Andalusite, Round, VS

3.5 mm (calibrated)

$ 104.15

View Gem
1 2 3
...
58
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 -> 9 star ratings

I think therea's no problem

Posted By Napoleon in August, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

I visited several online loose stone shops trying to find rare stones. I finally found one that I've been looking for here, and very satisfied. Looking forward to receive the item in 3 weeks.

Posted By Atsu in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

the selection is good as are the prices

Posted By Old man in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very good.

Posted By Tommy in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Took a chance on purchasing my gemstones from Gemselect and was impressed. 10/10

Posted By KT in September, 2025
Source: Bizrate

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
→ View All GemSelect Reviews on Bizrate
Enlarged Gemstone Image