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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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0.86ct Green Cat'S Eye Alexandrite, Oval, Opaque

0.86ct Green Cat'S Eye Alexandrite, Oval, Opaque

6 x 4.3 mm

$ 178.45

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0.04ct Black Diamond, Round, Opaque

0.04ct Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 11.62

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0.76ct Pink Morganite, Cushion, VVS-VS

0.76ct Pink Morganite, Cushion, VVS-VS

7.7 x 4.6 mm

$ 66.62

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0.04ct Black Diamond, Round, Opaque
Diamond Product Video (668215)

0.04ct Black Diamond, Round, Opaque

2 mm (calibrated)

$ 13.99

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0.82ct Yellow Morganite, Pear Shape, VS-SI

0.82ct Yellow Morganite, Pear Shape, VS-SI

7.6 x 5.9 mm

$ 44.92

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1.84ct Yellow Beryl, Cushion, VVS

1.84ct Yellow Beryl, Cushion, VVS

9 x 7 mm (calibrated)

$ 40.32

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1.34ct Yellow Beryl, Trillion, VVS

1.34ct Yellow Beryl, Trillion, VVS

8.4 x 8 mm

$ 26.69

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0.33ct Pink Morganite, Round, VS

0.33ct Pink Morganite, Round, VS

4.8 mm

$ 13.70

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0.80ct Pink Spinel, Cushion, VVS-VS

0.80ct Pink Spinel, Cushion, VVS-VS

5.8 x 4.9 mm

$ 55.78

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1.02ct Yellow Morganite, Oval, VVS-VS

1.02ct Yellow Morganite, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 44.70

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0.53ct Purple Spinel, Round, VS

0.53ct Purple Spinel, Round, VS

5 mm (calibrated)

$ 27.80

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0.22ctw White Diamond, Round, VVS-VS

0.22ctw White Diamond, Round, VVS-VS

3 mm (calibrated)

$ 363.37

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4.05ct Pink Morganite, Oval, Transparent

4.05ct Pink Morganite, Oval, Transparent

11.7 x 8.9 mm

$ 16.81

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13.98ctw Black Spinel, Heart, Opaque

13.98ctw Black Spinel, Heart, Opaque

12 x 12 mm (calibrated)

$ 76.58

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0.07ctw Black Diamond, Round, Opaque

0.07ctw Black Diamond, Round, Opaque

2 mm (calibrated)

$ 55.78

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0.71ct Pink Morganite, Cushion, VVS-VS

0.71ct Pink Morganite, Cushion, VVS-VS

6.6 x 4.9 mm

$ 38.89

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3.18ctw Yellow Golden Beryl, Oval, VVS-VS

3.18ctw Yellow Golden Beryl, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 80.19

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0.80ct Gray Spinel, Cushion, VS

0.80ct Gray Spinel, Cushion, VS

5.3 x 5.2 mm

$ 59.76

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1.71ct Yellow Beryl, Round, VS

1.71ct Yellow Beryl, Round, VS

8 mm (calibrated)

$ 40.88

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1.42ct Purple Spinel, Cushion, VVS

1.42ct Purple Spinel, Cushion, VVS

6.9 x 6.1 mm

$ 86.05

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2.86ctw White Topaz, Cushion, VVS-VS

2.86ctw White Topaz, Cushion, VVS-VS

4.6 x 4.6 mm

$ 15.67

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5.46ct White Topaz, Oval, VVS-VS

5.46ct White Topaz, Oval, VVS-VS

11.2 x 10 mm

$ 32.63

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3.97ct Pink Morganite, Oval, Translucent

3.97ct Pink Morganite, Oval, Translucent

12 x 8 mm (calibrated)

$ 43.49

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0.72ct Purple Spinel, Cushion, VS

0.72ct Purple Spinel, Cushion, VS

4.9 x 4.4 mm

$ 50.20

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

It was easy to navigate

Posted By GemGod in July, 2025
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

I could see the actual gem I was buying

Posted By Bugs in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

It was good. There was a large selection at prices I could afford.

Posted By Zorah in February, 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 -> 7 star ratings

easy interface for a pricless buy

Posted By Zeak in May, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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