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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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3.05ctw White Topaz, Cushion, VVS-VS

3.05ctw White Topaz, Cushion, VVS-VS

4.6 x 4.5 mm

$ 16.72

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5.37ct Pink Morganite, Oval, Translucent

5.37ct Pink Morganite, Oval, Translucent

12 x 10 mm (calibrated)

$ 53.49

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1.34ct Purple Spinel, Cushion, VS

1.34ct Purple Spinel, Cushion, VS

6.2 x 5.4 mm

$ 92.73

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0.04ct Black Diamond, Round, Opaque

0.04ct Black Diamond, Round, Opaque

2 mm (calibrated)

$ 13.70

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1.12ct Yellow Beryl, Oval, VVS-VS

1.12ct Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 22.31

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0.94ct Purple Spinel, Cushion, VVS

0.94ct Purple Spinel, Cushion, VVS

6.1 x 5.2 mm

$ 78.02

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19.19ctw Black Spinel, Round, Opaque

19.19ctw Black Spinel, Round, Opaque

10 mm (calibrated)

$ 126.14

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3.09ct Pink Spinel, Cushion, VVS-VS
Spinel Product Video (750133)

3.09ct Pink Spinel, Cushion, VVS-VS

9 x 7.3 mm

$ 7,437.63

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1.13ct Yellow Chrysoberyl, Pear Shape, VVS

1.13ct Yellow Chrysoberyl, Pear Shape, VVS

6.9 x 5.9 mm

$ 109.74

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2.90ctw White Topaz, Cushion, VVS-VS

2.90ctw White Topaz, Cushion, VVS-VS

4.6 x 4.6 mm

$ 15.89

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1.47ct Orange Sapphire, Cushion, VS-SI
Sapphire Product Video (746900)

1.47ct Orange Sapphire, Cushion, VS-SI

8.5 x 6.2 mm

$ 488.04

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1.33ct Yellow Beryl, Cushion, VVS-VS

1.33ct Yellow Beryl, Cushion, VVS-VS

8 x 6 mm (calibrated)

$ 29.14

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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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1.50ct Yellow Beryl, Oval, VVS-VS

1.50ct Yellow Beryl, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 37.35

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0.94ct Pink Morganite, Heart, VVS-VS
Morganite Product Video (473604)

0.94ct Pink Morganite, Heart, VVS-VS

6.2 x 6.8 mm

$ 82.39

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1.62ct Yellow Beryl, Oval, VVS

1.62ct Yellow Beryl, Oval, VVS

9 x 7 mm (calibrated)

$ 32.27

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2.38ct Yellow Beryl, Oval, VVS-VS

2.38ct Yellow Beryl, Oval, VVS-VS

10.9 x 8.5 mm

$ 47.41

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2.79ctw White Topaz, Cushion, VVS-VS

2.79ctw White Topaz, Cushion, VVS-VS

4.6 x 4.6 mm

$ 15.29

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0.17ctw White Diamond, Round, VVS-VS
Diamond Product Video (565144)

0.17ctw White Diamond, Round, VVS-VS

2.7 mm (calibrated)

$ 308.86

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3.86ctw White Topaz, Square, VVS-VS

3.86ctw White Topaz, Square, VVS-VS

4 x 4 mm (calibrated)

$ 31.08

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2.27ctw Multicolor Andalusite, Oval, VS

2.27ctw Multicolor Andalusite, Oval, VS

6 x 4 mm (calibrated)

$ 121.71

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1.50ct Pink Morganite, Pear Shape, VVS-VS

1.50ct Pink Morganite, Pear Shape, VVS-VS

10 x 5.6 mm

$ 115.04

View Gem
2.71ctw White Topaz, Cushion, VVS-VS

2.71ctw White Topaz, Cushion, VVS-VS

4.6 x 4.5 mm

$ 14.85

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2.48ctw Multicolor Andalusite, Round, VS-SI

2.48ctw Multicolor Andalusite, Round, VS-SI

4 mm (calibrated)

$ 122.27

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

Wonderful purchase, can't wait to see the stone.

Posted By Tim in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Found a beautiful opal at a great price. I was not disappointed when it arrived. Even better in person.

Posted By Fried Rice in August, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

Site worked well and helped me find a rock that matched what I was looking for. Well within budget and I trust it will show up, so that's definitely positive. Not much else to it. Satisfied.

Posted By Big Ricky in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Over pretty well experience the your website no complaints about it very easy reliable service provided

Posted By Blas in January, 2026
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

I can pick and choose from large selection and find just what I need for .y projects, currently my cane.

Posted By Darkstar731 in July, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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