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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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4.59ct White Topaz, Round, VVS-VS

4.59ct White Topaz, Round, VVS-VS

10 mm (calibrated)

$ 21.37

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0.71ct Purple Spinel, Oval, VS

0.71ct Purple Spinel, Oval, VS

5.7 x 4.8 mm

$ 58.35

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7.68ctw White Topaz, Square, VVS

7.68ctw White Topaz, Square, VVS

5 x 5 mm (calibrated)

$ 63.95

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0.55ct Green Chrysoberyl Cat'S Eye, Oval, Translucent

0.55ct Green Chrysoberyl Cat'S Eye, Oval, Translucent

4.7 x 4.5 mm

$ 16.43

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0.09ctw Black Diamond, Round, Opaque

0.09ctw Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 71.71

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0.56ct Green Cat'S Eye Alexandrite, Oval, Opaque

0.56ct Green Cat'S Eye Alexandrite, Oval, Opaque

5.4 x 3.9 mm

$ 116.20

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4.81ct Turquoise Aquamarine, Square, Translucent

4.81ct Turquoise Aquamarine, Square, Translucent

10 x 10 mm (calibrated)

$ 99.81

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0.73ct Gray Spinel, Cushion, VS

0.73ct Gray Spinel, Cushion, VS

5.8 x 4.7 mm

$ 60.59

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1.39ct Yellow Beryl, Trillion, VVS

1.39ct Yellow Beryl, Trillion, VVS

8 x 8 mm (calibrated)

$ 27.69

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1.62ct Yellow Beryl, Round, VVS-VS

1.62ct Yellow Beryl, Round, VVS-VS

8 mm (calibrated)

$ 32.27

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1.63ct Purple Spinel, Oval, VS

1.63ct Purple Spinel, Oval, VS

7.5 x 5.9 mm

$ 270.58

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1.12ct Yellow Beryl, Oval, VVS-VS

1.12ct Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 24.54

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1.46ct Yellow Chrysoberyl, Marquise, VVS-VS
Chrysoberyl Product Video (366323)

1.46ct Yellow Chrysoberyl, Marquise, VVS-VS

11 x 4.9 mm

$ 154.77

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4.85ct Yellow Rutile Topaz, Oval, Transparent

4.85ct Yellow Rutile Topaz, Oval, Transparent

11.5 x 9.4 mm

$ 100.64

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0.90ct Yellow Beryl, Oval, VS

0.90ct Yellow Beryl, Oval, VS

8 x 6 mm (calibrated)

$ 17.18

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1.03ct Purple Spinel, Oval, VVS-VS
Spinel Product Video (752653)

1.03ct Purple Spinel, Oval, VVS-VS

6.9 x 5.4 mm

$ 512.94

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0.88ct Yellow Morganite, Pear Shape, VVS

0.88ct Yellow Morganite, Pear Shape, VVS

8 x 6 mm (calibrated)

$ 38.56

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1.00ct Yellow Morganite, Pear Shape, VS

1.00ct Yellow Morganite, Pear Shape, VS

8 x 6 mm (calibrated)

$ 54.78

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0.87ct Pink Morganite, Pear Shape, VVS-VS

0.87ct Pink Morganite, Pear Shape, VVS-VS

10.6 x 4.9 mm

$ 52.43

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5.06ct White Rutile Topaz, Emerald Cut, Transparent
Rutile Topaz Product Video (753628)

5.06ct White Rutile Topaz, Emerald Cut, Transparent

11.4 x 7.5 mm

$ 105.00

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3.61ctw Multicolor Andalusite, Round, VS

3.61ctw Multicolor Andalusite, Round, VS

3.5 mm (calibrated)

$ 158.55

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0.23ct Blue Aquamarine, Oval, VS

0.23ct Blue Aquamarine, Oval, VS

4.9 x 3.8 mm

$ 32.07

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0.83ct Yellow Morganite, Pear Shape, VVS-VS

0.83ct Yellow Morganite, Pear Shape, VVS-VS

8 x 6 mm (calibrated)

$ 36.37

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0.95ct Purple Spinel, Cushion, VS

0.95ct Purple Spinel, Cushion, VS

5.9 x 5.6 mm

$ 52.04

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

My whole experience is great.

Posted By Ghs in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Recomendado Totalmente Los Productos Se Entregaron A Tiempo

Posted By Alexis in May, 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

Have made 2 purchases so far from GemSelect and they have been amazing! Anytime I requested additional info, videos or pictures of a particular item, the response was always timely and helpful. This is a great place to buy, if you are looking for loose stones. Highly recommend!

Posted By Britnee Rose in September, 2025
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 -> 10 star ratings

Very pleasant

Posted By Varun in June, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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