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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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1.46ct Yellow Beryl, Oval, VVS-VS

1.46ct Yellow Beryl, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 36.35

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4.75ct White Topaz, Oval, VVS

4.75ct White Topaz, Oval, VVS

11.9 x 8.9 mm

$ 31.22

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0.83ct Pink Morganite, Pear Shape, VVS

0.83ct Pink Morganite, Pear Shape, VVS

8 x 6 mm (calibrated)

$ 34.45

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0.59ct Pink Spinel, Cushion, VVS-VS

0.59ct Pink Spinel, Cushion, VVS-VS

4.8 x 4.2 mm

$ 41.13

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1.01ct Yellow Beryl, Trillion, VVS

1.01ct Yellow Beryl, Trillion, VVS

7.5 x 7.1 mm

$ 20.12

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14.00ctw Black Spinel, Heart, Opaque

14.00ctw Black Spinel, Heart, Opaque

12 x 12 mm (calibrated)

$ 76.69

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3.11ctw White Topaz, Cushion, VVS-VS

3.11ctw White Topaz, Cushion, VVS-VS

4.6 x 4.6 mm

$ 17.04

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24.82ctw Black Spinel, Baguette, Opaque

24.82ctw Black Spinel, Baguette, Opaque

17.6 x 8.2 mm

$ 196.33

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0.08ctw Black Diamond, Round, Opaque

0.08ctw Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 23.25

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0.81ct Yellow Beryl, Trillion, VVS-VS

0.81ct Yellow Beryl, Trillion, VVS-VS

7 x 7 mm (calibrated)

$ 16.14

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1.18ct Yellow Chrysoberyl Cat'S Eye, Oval, Translucent

1.18ct Yellow Chrysoberyl Cat'S Eye, Oval, Translucent

5.3 x 5.1 mm

$ 35.26

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20.30ctw Black Spinel, Oval, Opaque

20.30ctw Black Spinel, Oval, Opaque

16 x 12 mm (calibrated)

$ 66.72

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1.84ct Yellow Beryl, Oval, VVS

1.84ct Yellow Beryl, Oval, VVS

9.6 x 7.7 mm

$ 36.65

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0.96ct Pink Morganite, Oval, VVS-VS

0.96ct Pink Morganite, Oval, VVS-VS

7.8 x 5.7 mm

$ 39.84

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1.54ct Yellow Beryl, Oval, VS

1.54ct Yellow Beryl, Oval, VS

9 x 7 mm (calibrated)

$ 36.81

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0.33ct Gray Cat'S Eye Alexandrite, Oval, Opaque

0.33ct Gray Cat'S Eye Alexandrite, Oval, Opaque

5 x 3.4 mm

$ 54.78

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0.44ct Pink Morganite, Pear Shape, VVS-VS

0.44ct Pink Morganite, Pear Shape, VVS-VS

8.6 x 3.8 mm

$ 22.09

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0.62ct Green Cat'S Eye Alexandrite, Oval, Opaque

0.62ct Green Cat'S Eye Alexandrite, Oval, Opaque

5.5 x 4.3 mm

$ 128.65

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3.28ctw Pink Morganite, Oval, VS
Morganite Product Video (575207)

3.28ctw Pink Morganite, Oval, VS

9 x 7 mm (calibrated)

$ 287.49

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5.46ct Yellow Rutile Topaz, Pear Shape, Transparent

5.46ct Yellow Rutile Topaz, Pear Shape, Transparent

12 x 12 mm (calibrated)

$ 113.30

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5.07ct Green Cat'S Eye Beryl, Oval, Translucent
Cat's Eye Beryl Product Video (735068)

5.07ct Green Cat'S Eye Beryl, Oval, Translucent

10.7 x 9.6 mm

$ 885.06

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0.64ct Pink Morganite, Round, VVS

0.64ct Pink Morganite, Round, VVS

6 mm (calibrated)

$ 26.56

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1.11ct Pink Morganite, Round, VS

1.11ct Pink Morganite, Round, VS

7 mm (calibrated)

$ 43.12

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1.32ct Purple Spinel, Oval, VS-SI

1.32ct Purple Spinel, Oval, VS-SI

7.4 x 6 mm

$ 90.39

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 -> 10 star ratings

Good selection, using for custom jewlery for my wife.

Posted By Smitty in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Love the precise descriptions and calibrations of hte loose gemstones. Would like to have seen more variety in the size gem I was looking for.

Posted By RenoRose in January, 2026
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

I was able to find what I wanted very easily!

Posted By Lenny in January, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Will know more once order received

Posted By Jim in September, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

The website was easy to use and there were a lot of good options, I was satisfied.

Posted By Brielly in January, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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