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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

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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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1.76Ctw Multicolor Andalusite, Oval, Vs

1.76Ctw Multicolor Andalusite, Oval, Vs

5.7 x 4 mm

$ 116.16

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2.11Ct Tuscany Yellow Beryl, Oval, Vvs-Vs

2.11Ct Tuscany Yellow Beryl, Oval, Vvs-Vs

10 x 8 mm (calibrated)

$ 60.77

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1.27Ct Lavender Spinel, Cushion, Vvs

1.27Ct Lavender Spinel, Cushion, Vvs

6.5 x 6.3 mm

$ 83.22

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1.53Ct Light Yellow Beryl, Round, Vvs

1.53Ct Light Yellow Beryl, Round, Vvs

8 mm (calibrated)

$ 36.72

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4.88Ctw Warm White Topaz, Square, Vvs-Vs

4.88Ctw Warm White Topaz, Square, Vvs-Vs

4 x 4 mm (calibrated)

$ 43.04

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1.12Ct Light Golden Morganite, Oval, Vvs-Vs

1.12Ct Light Golden Morganite, Oval, Vvs-Vs

8 x 6 mm (calibrated)

$ 53.10

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0.47Ct Medium Red Spinel, Pear Shape, Vs

0.47Ct Medium Red Spinel, Pear Shape, Vs

6.4 x 4.2 mm

$ 47.00

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0.88Ct Black Diamond, Round, Opaque
Diamond Product Video (669016)

0.88Ct Black Diamond, Round, Opaque

5.5 mm (calibrated)

$ 844.80

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0.76Ct Golden Beryl, Oval, Vvs-Vs

0.76Ct Golden Beryl, Oval, Vvs-Vs

6.9 x 5.2 mm

$ 18.24

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17.48Ctw Black Spinel, Heart, Opaque

17.48Ctw Black Spinel, Heart, Opaque

13 x 13 mm (calibrated)

$ 69.22

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0.14Ctw J Diamond, Round, Vvs-Vs

0.14Ctw J Diamond, Round, Vvs-Vs

2.7 mm (calibrated)

$ 301.54

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0.95Ct Light Golden Morganite, Pear Shape, Vvs-Vs

0.95Ct Light Golden Morganite, Pear Shape, Vvs-Vs

8 x 6 mm (calibrated)

$ 50.16

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1.42Ct Pinkish Purple Sapphire, Cushion, Vs
Sapphire Product Video (447717)

1.42Ct Pinkish Purple Sapphire, Cushion, Vs

6.9 x 5.5 mm

$ 902.22

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1.41Ct Deep Yellow Beryl, Round, Vs

1.41Ct Deep Yellow Beryl, Round, Vs

7 mm (calibrated)

$ 37.22

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7.83Ct Medium Pink Morganite, Pear Shape, Translucent

7.83Ct Medium Pink Morganite, Pear Shape, Translucent

16 x 12 mm (calibrated)

$ 39.15

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4.43Ct Flamingo Pink Morganite, Oval, Transparent

4.43Ct Flamingo Pink Morganite, Oval, Transparent

12 x 10 mm (calibrated)

$ 58.48

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1.09Ctw Warm White Chrysoberyl Cat's Eye, Oval, Translucent

1.09Ctw Warm White Chrysoberyl Cat's Eye, Oval, Translucent

4.5 x 4.3 mm

$ 39.24

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0.51Ct Medium Yellow Chrysoberyl Cat's Eye, Oval, Translucent

0.51Ct Medium Yellow Chrysoberyl Cat's Eye, Oval, Translucent

5.2 x 4.1 mm

$ 18.36

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5.37Ct Light Pink Morganite, Oval, Translucent

5.37Ct Light Pink Morganite, Oval, Translucent

12 x 10 mm (calibrated)

$ 64.44

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3.95Ct White Topaz, Heart, Vvs-Vs

3.95Ct White Topaz, Heart, Vvs-Vs

10 x 10 mm (calibrated)

$ 39.50

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3.58Ctw Multicolor Andalusite, Round, Vs

3.58Ctw Multicolor Andalusite, Round, Vs

3.5 mm (calibrated)

$ 189.44

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3.47Ctw White Topaz, Square, Vvs-Vs

3.47Ctw White Topaz, Square, Vvs-Vs

4 x 4 mm (calibrated)

$ 32.06

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0.12Ct Black Diamond, Round, Opaque

0.12Ct Black Diamond, Round, Opaque

3 mm (calibrated)

$ 68.78

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5.84Ct Clear White Topaz, Cushion, Vvs-Vs

5.84Ct Clear White Topaz, Cushion, Vvs-Vs

12 x 10 mm (calibrated)

$ 46.72

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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

Very good.

Posted By Tommy in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I needed a very specific color of tourmaline and Gem Select had it. I had to get the client to agree and then ordered the stone. It arrived better than pictured and we all were very happy.

Posted By Tim W in February, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

I was looking for a small gift for a friend- the process is the same as every other time and was very simple, and she even got her gift early! On the downside, there's no way to easily keep track of multiple Shipping Addresses, so if I want to send a gift to Friend A and to Friend B, I have to overwrite everything and it's a fair bit clunky in that regard.

Posted By Jezzi in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very large selection from affordable to high end I will be coming back to shop again!

Posted By GreenGator in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

So far So good

Posted By VH-1 in July, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

It was fine . Wish there had been more round stones to select from

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