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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
Turquoise Natural Untreated Gemstones
Violet Natural Untreated Gemstones
White Natural Untreated Gemstones
Yellow Natural Untreated Gemstones
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1.69Ctw Multicolor Andalusite, Oval, Vs

1.69Ctw Multicolor Andalusite, Oval, Vs

5 x 3 mm (calibrated)

$ 108.77

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1.03Ct Light Pink Morganite, Cushion, Vvs-Vs

1.03Ct Light Pink Morganite, Cushion, Vvs-Vs

8 x 5.3 mm

$ 54.38

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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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0.17Ctw H Diamond, Round, Vvs-Vs
Diamond Product Video (565138)

0.17Ctw H Diamond, Round, Vvs-Vs

2.7 mm (calibrated)

$ 372.12

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0.02Ct Black Diamond, Round, Opaque

0.02Ct Black Diamond, Round, Opaque

1.9 mm (calibrated)

$ 19.20

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0.32Ct Black Diamond, Square, Opaque

0.32Ct Black Diamond, Square, Opaque

3.3 x 3.1 mm

$ 160.00

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4.47Ct Vivid Pink Morganite, Trillion, Translucent

4.47Ct Vivid Pink Morganite, Trillion, Translucent

12.6 x 11.9 mm

$ 59.00

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0.66Ct Light Dijon Yellow Beryl, Oval, Vvs-Vs

0.66Ct Light Dijon Yellow Beryl, Oval, Vvs-Vs

7 x 5 mm (calibrated)

$ 19.80

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1.64Ctw Multicolor Andalusite, Oval, Vs

1.64Ctw Multicolor Andalusite, Oval, Vs

5 x 3.1 mm

$ 105.56

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3.51Ct Medium Pink Morganite, Marquise, Translucent

3.51Ct Medium Pink Morganite, Marquise, Translucent

14.9 x 7 mm

$ 46.33

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3.20Ct Light Pink Morganite, Oval, Transparent

3.20Ct Light Pink Morganite, Oval, Transparent

10.9 x 8.1 mm

$ 42.24

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4.04Ctw Warm White Topaz, Square, Vs

4.04Ctw Warm White Topaz, Square, Vs

4 x 4 mm (calibrated)

$ 37.33

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0.47Ct Yellowish Green Chrysoberyl Cat's Eye, Oval, Translucent

0.47Ct Yellowish Green Chrysoberyl Cat's Eye, Oval, Translucent

4.4 x 4.4 mm

$ 16.92

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0.68Ct Medium Purple Spinel, Cushion, Vvs-Vs

0.68Ct Medium Purple Spinel, Cushion, Vvs-Vs

5 x 5 mm (calibrated)

$ 57.12

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4.52Ctw Clear White Topaz, Cushion, Vvs-Vs

4.52Ctw Clear White Topaz, Cushion, Vvs-Vs

4.6 x 4.6 mm

$ 29.83

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0.27Ct Dark Red Spinel, Baguette, Vs

0.27Ct Dark Red Spinel, Baguette, Vs

5.2 x 2.8 mm

$ 27.00

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0.10Ctw Black Diamond, Round, Opaque

0.10Ctw Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 35.00

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2.19Ctw Light Yellow Beryl, Oval, Vvs-Vs

2.19Ctw Light Yellow Beryl, Oval, Vvs-Vs

8 x 6 mm (calibrated)

$ 52.56

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1.12Ct Light Purple Spinel, Cushion, Vs

1.12Ct Light Purple Spinel, Cushion, Vs

6.3 x 6.1 mm

$ 100.79

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1.15Ct Light Golden-Yellow Beryl, Oval, Vvs-Vs

1.15Ct Light Golden-Yellow Beryl, Oval, Vvs-Vs

8 x 6 mm (calibrated)

$ 27.60

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3.86Ctw Warm White Topaz, Square, Vvs-Vs

3.86Ctw Warm White Topaz, Square, Vvs-Vs

4 x 4 mm (calibrated)

$ 37.45

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1.63Ct Very Light Pink Morganite, Pear Shape, Vs

1.63Ct Very Light Pink Morganite, Pear Shape, Vs

10.2 x 8.4 mm

$ 86.06

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0.98Ct Medium Purple Spinel, Cushion, Vs

0.98Ct Medium Purple Spinel, Cushion, Vs

6.2 x 5 mm

$ 83.21

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0.09Ct Black Diamond, Round, Opaque

0.09Ct Black Diamond, Round, Opaque

2.7 mm (calibrated)

$ 37.12

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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

easy site to navigate

Posted By Curt's Cabochons in June, 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

Overall Rating -> 10 star ratings

Very food

Posted By Keeto in July, 2025
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

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

Overall Rating -> 9 star ratings

Plan on purchasing on an ongoing basis. So far.....so good....

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