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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
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Multicolor Natural Untreated Gemstones
Orange Natural Untreated Gemstones
Pink Natural Untreated Gemstones
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Red Natural Untreated Gemstones
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Violet Natural Untreated Gemstones
White Natural Untreated Gemstones
Yellow Natural Untreated Gemstones
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0.26Ct Purple-Red Spinel, Baguette, Vs

0.26Ct Purple-Red Spinel, Baguette, Vs

4 x 3 mm (calibrated)

$ 26.00

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0.36Ct Coral Pink Tone Morganite, Oval, Vs-Si

0.36Ct Coral Pink Tone Morganite, Oval, Vs-Si

5.9 x 4.3 mm

$ 18.00

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4.21Ctw Clear White Topaz, Square, Vs

4.21Ctw Clear White Topaz, Square, Vs

4 x 4 mm (calibrated)

$ 38.90

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0.07Ct Black Diamond, Round, Opaque

0.07Ct Black Diamond, Round, Opaque

2.5 mm (calibrated)

$ 40.81

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0.39Ct Light Green Chrysoberyl Cat's Eye, Round, Transparent

0.39Ct Light Green Chrysoberyl Cat's Eye, Round, Transparent

3.8 mm

$ 12.96

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0.18Ct L Diamond, Round, Vvs-Vs

0.18Ct L Diamond, Round, Vvs-Vs

3.5 mm (calibrated)

$ 364.11

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0.21Ct Medium Red Spinel, Square, Vs

0.21Ct Medium Red Spinel, Square, Vs

3.3 x 3.1 mm

$ 21.00

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1.37Ctw Light Yellow Beryl, Oval, Vs

1.37Ctw Light Yellow Beryl, Oval, Vs

7 x 5 mm (calibrated)

$ 32.88

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1.18Ct Banana Yellow Chrysoberyl Cat's Eye, Oval, Translucent

1.18Ct Banana Yellow Chrysoberyl Cat's Eye, Oval, Translucent

5.3 x 5.1 mm

$ 42.48

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0.59Ct Coral Pink Tone Morganite, Pear Shape, Vvs

0.59Ct Coral Pink Tone Morganite, Pear Shape, Vvs

8.8 x 4 mm

$ 42.84

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2.92Ctw Clear White Topaz, Cushion, Vvs-Vs

2.92Ctw Clear White Topaz, Cushion, Vvs-Vs

4.6 x 4.5 mm

$ 19.27

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2.14Ctw Medium Pink Morganite, Oval, Vs

2.14Ctw Medium Pink Morganite, Oval, Vs

8 x 6 mm (calibrated)

$ 169.49

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7.87Ctw Black Spinel, Round, Opaque

7.87Ctw Black Spinel, Round, Opaque

10 mm (calibrated)

$ 36.35

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0.12Ctw H Diamond, Marquise, Vvs

0.12Ctw H Diamond, Marquise, Vvs

4 x 2 mm (calibrated)

$ 502.50

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1.48Ct Intense Pinkish Purple Sapphire, Pear Shape, Vs
Sapphire Product Video (447866)

1.48Ct Intense Pinkish Purple Sapphire, Pear Shape, Vs

8.5 x 6.3 mm

$ 940.34

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0.03Ct Black Diamond, Round, Opaque

0.03Ct Black Diamond, Round, Opaque

2 mm (calibrated)

$ 12.37

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5.09Ct Flamingo Pink Morganite, Pear Shape, Transparent

5.09Ct Flamingo Pink Morganite, Pear Shape, Transparent

14 x 10 mm (calibrated)

$ 25.45

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0.89Ct Light Neutral Orange Morganite, Pear Shape, Vs

0.89Ct Light Neutral Orange Morganite, Pear Shape, Vs

8 x 6 mm (calibrated)

$ 64.62

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1.43Ctw Multicolor Andalusite, Round, Vs

1.43Ctw Multicolor Andalusite, Round, Vs

3.5 mm (calibrated)

$ 94.38

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0.50Ct Light Honey Yellow Beryl, Pear Shape, Vs

0.50Ct Light Honey Yellow Beryl, Pear Shape, Vs

6.9 x 4.7 mm

$ 14.40

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1.25Ct Medium Yellow Beryl, Oval, Vs

1.25Ct Medium Yellow Beryl, Oval, Vs

8 x 6 mm (calibrated)

$ 30.00

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1.38Ct Light Pink Morganite, Pear Shape, Vs

1.38Ct Light Pink Morganite, Pear Shape, Vs

10 x 6.2 mm

$ 127.51

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1.96Ct Light Golden-Yellow Beryl, Oval, Vvs

1.96Ct Light Golden-Yellow Beryl, Oval, Vvs

10 x 8 mm (calibrated)

$ 47.04

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8.96Ct Greenish Blue Aquamarine, Pear Shape, Vs-Si
Aquamarine Product Video (730039)

8.96Ct Greenish Blue Aquamarine, Pear Shape, Vs-Si

19.6 x 11.5 mm

$ 860.16

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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

Fast and reliable service.

Posted By Zæck in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I was looking for high-quality amethyst on this site, and I was able to compare size, color, and weight in detail before making a purchase.

Posted By Atsuhisa in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Great! Affordable

Posted By Spinellope in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Love how easy the site is to use. Really love that the pictures are of actual product.

Posted By LeAnn in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

My experience has always been fantastic. Today I saved 6 gems to email a customer looking for a particular color blend to fit into an east west setting, so her options were limited, but we found one she wanted, deleted all the others in the cart and order the gem she selected. It was helpful to be able to put them in the cart so I could save them until she selected the one she wanted without having to research all of them again.

Posted By RJ in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

selection was broad and the check out was quick. Great site

Posted By JC Karl in September, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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