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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
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0.21ct White Diamond, Round, VVS-VS
Diamond Product Video (747219)

0.21ct White Diamond, Round, VVS-VS

3.7 mm

$ 352.58

View Gem
5.35ct Gray Star Sapphire, Oval, Opaque
Star Sapphire Product Video (470839)

5.35ct Gray Star Sapphire, Oval, Opaque

9.5 x 9.1 mm

$ 186.50

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5.38ct White Topaz, Oval, VVS-VS
Topaz Product Video (384958)

5.38ct White Topaz, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 41.27

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0.24ct Black Diamond, Square, Opaque

0.24ct Black Diamond, Square, Opaque

2.8 x 2.8 mm

$ 119.52

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3.28ctw Multicolor Andalusite, Round, VS

3.28ctw Multicolor Andalusite, Round, VS

3.5 mm (calibrated)

$ 144.07

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0.53ct Purple Spinel, Round, VVS-VS

0.53ct Purple Spinel, Round, VVS-VS

4.8 mm

$ 27.80

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1.56ct Purple Spinel, Oval, VS

1.56ct Purple Spinel, Oval, VS

7.7 x 5.9 mm

$ 86.29

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1.45ct Yellow Beryl, Round, VVS

1.45ct Yellow Beryl, Round, VVS

8 mm (calibrated)

$ 28.88

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1.15ct Pink Morganite, Round, VS

1.15ct Pink Morganite, Round, VS

7 mm (calibrated)

$ 44.67

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0.52ct Green Chrysoberyl Cat'S Eye, Round, Translucent

0.52ct Green Chrysoberyl Cat'S Eye, Round, Translucent

4.3 mm

$ 15.54

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0.05ct Black Diamond, Round, Opaque
Diamond Product Video (673576)

0.05ct Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 17.62

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1.39ct Yellow Beryl, Pear Shape, VVS-VS

1.39ct Yellow Beryl, Pear Shape, VVS-VS

10 x 7 mm (calibrated)

$ 27.69

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2.92ctw Yellow Golden Beryl, Oval, VS

2.92ctw Yellow Golden Beryl, Oval, VS

9 x 7 mm (calibrated)

$ 63.98

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0.73ct Yellow Beryl, Oval, VVS-VS

0.73ct Yellow Beryl, Oval, VVS-VS

7.1 x 5.2 mm

$ 18.18

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1.49ct Yellow Beryl, Oval, VVS

1.49ct Yellow Beryl, Oval, VVS

9.1 x 6.7 mm

$ 29.68

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0.31ct Yellow Diamond, Round, VS
Diamond Product Video (564616)

0.31ct Yellow Diamond, Round, VS

4.2 mm

$ 565.94

View Gem
0.52ct Pink Spinel, Cushion, VVS-VS

0.52ct Pink Spinel, Cushion, VVS-VS

5.3 x 4.9 mm

$ 43.16

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0.04ct Black Diamond, Round, Opaque

0.04ct Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 13.70

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0.05ct Black Diamond, Round, Opaque

0.05ct Black Diamond, Round, Opaque

2.3 mm (calibrated)

$ 17.11

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0.03ct Black Diamond, Round, Opaque

0.03ct Black Diamond, Round, Opaque

2 mm (calibrated)

$ 10.27

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0.59ct Yellow Beryl, Oval, VVS-VS

0.59ct Yellow Beryl, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 14.69

View Gem
0.54ct Purple Spinel, Cushion, VVS-VS

0.54ct Purple Spinel, Cushion, VVS-VS

5 x 4 mm (calibrated)

$ 37.65

View Gem
7.32ct Pink Morganite, Oval, Transparent

7.32ct Pink Morganite, Oval, Transparent

16.3 x 10.2 mm

$ 72.91

View Gem
0.73ct Pink Morganite, Pear Shape, VS

0.73ct Pink Morganite, Pear Shape, VS

8 x 5.2 mm

$ 63.98

View Gem
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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 -> 8 star ratings

It was a good interaction I got a good gemstone for cheap

Posted By Jon 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

Overall Rating -> 9 star ratings

Everything was good, the purchase was what I expected and what they show is what you get.

Posted By Mr. in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I love the product and the details about each of them.

Posted By Love It! in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I was looking for high-quality amethyst on this site, and I was able to compare size, color, and weight in detail before making a purchase.

Posted By Atsuhisa in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Navigating the site was very easy and the photos of the exact gem you would be purchasing was well done.

Posted By HVeeder in February, 2026
Source: Bizrate
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