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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
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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
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Violet Natural Untreated Gemstones
White Natural Untreated Gemstones
Yellow Natural Untreated Gemstones
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0.76Ct Pale Forest Green Cat's Eye Alexandrite, Oval, Opaque

0.76Ct Pale Forest Green Cat's Eye Alexandrite, Oval, Opaque

6.1 x 4.3 mm

$ 190.00

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2.31Ctw Multicolor Andalusite, Round, Vs-Si

2.31Ctw Multicolor Andalusite, Round, Vs-Si

4 mm (calibrated)

$ 137.22

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3.19Ctw White Topaz, Cushion, Vvs-Vs

3.19Ctw White Topaz, Cushion, Vvs-Vs

4.6 x 4.5 mm

$ 21.06

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3.66Ctw Multicolor Andalusite, Round, Vs

3.66Ctw Multicolor Andalusite, Round, Vs

3.7 mm

$ 193.68

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0.09Ctw Black Diamond, Round, Opaque

0.09Ctw Black Diamond, Round, Opaque

2.2 mm (calibrated)

$ 49.14

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4.05Ctw Multicolor Andalusite, Round, Vs
Andalusite Product Video (382328)

4.05Ctw Multicolor Andalusite, Round, Vs

3.3 mm

$ 214.54

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1.27Ct Very Light Pinkish Purple Spinel, Cushion, Vs

1.27Ct Very Light Pinkish Purple Spinel, Cushion, Vs

6.4 x 6.1 mm

$ 153.79

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4.47Ctw Clear White Topaz, Cushion, Vvs-Vs

4.47Ctw Clear White Topaz, Cushion, Vvs-Vs

4.6 x 4.6 mm

$ 29.51

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0.09Ct Black Diamond, Round, Opaque

0.09Ct Black Diamond, Round, Opaque

2.6 mm (calibrated)

$ 37.12

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0.77Ct Light Golden Morganite, Cushion, Vs

0.77Ct Light Golden Morganite, Cushion, Vs

6 x 6 mm (calibrated)

$ 55.91

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1.41Ct Medium Purple Spinel, Cushion, Vs

1.41Ct Medium Purple Spinel, Cushion, Vs

6.8 x 5.5 mm

$ 84.91

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6.62Ct Medium Pink Morganite, Pear Shape, Transparent
Morganite Product Video (737626)

6.62Ct Medium Pink Morganite, Pear Shape, Transparent

11 x 11 mm (calibrated)

$ 33.10

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9.93Ct Intense Silver Aqua-Blue Aquamarine, Emerald Cut, Vs-Si
Aquamarine Product Video (730420)

9.93Ct Intense Silver Aqua-Blue Aquamarine, Emerald Cut, Vs-Si

15 x 10 mm (calibrated)

$ 794.40

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9.30Ctw Black Spinel, Round, Opaque

9.30Ctw Black Spinel, Round, Opaque

10 mm (calibrated)

$ 42.97

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0.27Ct Light Pink Morganite, Round, Vvs

0.27Ct Light Pink Morganite, Round, Vvs

4.5 mm (calibrated)

$ 13.50

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0.16Ct R Diamond, Round, Vs

0.16Ct R Diamond, Round, Vs

3.5 mm (calibrated)

$ 323.65

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4.31Ct Light Rose Pink Morganite, Pear Shape, Transparent

4.31Ct Light Rose Pink Morganite, Pear Shape, Transparent

14 x 9 mm (calibrated)

$ 56.89

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0.40Ct Very Light Pink Spinel, Cushion, Vvs-Vs

0.40Ct Very Light Pink Spinel, Cushion, Vvs-Vs

4.1 x 3.8 mm

$ 33.60

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0.05Ct Black Diamond, Round, Opaque
Diamond Product Video (673576)

0.05Ct Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 21.23

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7.44Ctw Black Spinel, Round, Opaque

7.44Ctw Black Spinel, Round, Opaque

9 mm (calibrated)

$ 34.37

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1.10Ct Light Orange Morganite, Oval, Vs

1.10Ct Light Orange Morganite, Oval, Vs

8 x 6 mm (calibrated)

$ 79.86

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7.42Ctw Black Spinel, Round, Opaque

7.42Ctw Black Spinel, Round, Opaque

9.5 mm (calibrated)

$ 39.18

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14.47Ctw Black Spinel, Round, Opaque

14.47Ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 57.30

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4.05Ct White Topaz, Round, Vs
Topaz Product Video (571487)

4.05Ct White Topaz, Round, Vs

10 mm (calibrated)

$ 26.74

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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 -> 9 star ratings

Will know more once order received

Posted By Jim in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Easy process.

Posted By Crafty Seabee in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

IT WAS GREAT SIMPLE I WAS ABLE TO MAKE AN ACCOUNT EASY AND WAS ABLE TO FAVORITE ALL OF MY FINAL SELECTED GEMS, I JUST LOVE IT.

Posted By YE in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I purchased from you before and I have never been disappointed. I always received what I expected and your products are very nice.

Posted By MVK in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

It's always a pleasure doing business with Gem Select. Outstanding products ant very reasonable prices. Thank You One and All.

Posted By G.W. or Bakyow in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I always purchase my stones from GemSelect, their products are high quality and customer service is always great. I also like the fact that I am able to purchase unique items

Posted By Desperaux in November, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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