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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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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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0.03Ct Black Diamond, Round, Opaque

0.03Ct Black Diamond, Round, Opaque

2 mm (calibrated)

$ 28.80

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0.54Ct Yellowish Green Chrysoberyl Cat's Eye, Oval, Transparent

0.54Ct Yellowish Green Chrysoberyl Cat's Eye, Oval, Transparent

4.3 x 4.2 mm

$ 19.44

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0.52Ct Black Diamond, Round, Opaque
Diamond Product Video (668695)

0.52Ct Black Diamond, Round, Opaque

4.5 mm (calibrated)

$ 499.20

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0.84Ct Light Purple Spinel, Cushion, Vs

0.84Ct Light Purple Spinel, Cushion, Vs

5.5 x 5.2 mm

$ 151.20

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0.80Ct Cherry Pink Tone Spinel, Cushion, Vvs-Vs

0.80Ct Cherry Pink Tone Spinel, Cushion, Vvs-Vs

5.8 x 4.9 mm

$ 67.20

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1.25Ct Medium Yellow Golden Beryl, Oval, Vs

1.25Ct Medium Yellow Golden Beryl, Oval, Vs

8 x 6 mm (calibrated)

$ 41.26

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5.56Ct Coral Pink Morganite, Oval, Transparent

5.56Ct Coral Pink Morganite, Oval, Transparent

13 x 9 mm (calibrated)

$ 66.72

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1.51Ct Light Golden-Yellow Beryl, Oval, Vs

1.51Ct Light Golden-Yellow Beryl, Oval, Vs

9 x 7 mm (calibrated)

$ 34.73

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0.55Ct Reddish Orange Spinel, Cushion, Vvs-Vs

0.55Ct Reddish Orange Spinel, Cushion, Vvs-Vs

5.2 x 4.6 mm

$ 46.20

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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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3.23Ctw Light Yellow Beryl, Oval, Vvs-Vs

3.23Ctw Light Yellow Beryl, Oval, Vvs-Vs

9 x 7 mm (calibrated)

$ 77.52

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0.12Ctw Black Diamond, Square, Opaque

0.12Ctw Black Diamond, Square, Opaque

2 x 2 mm (calibrated)

$ 72.00

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10.38Ct Light Blue Aquamarine, Emerald Cut, Vvs
Aquamarine Product Video (467811)

10.38Ct Light Blue Aquamarine, Emerald Cut, Vvs

21.9 x 8.4 mm

$ 2,055.24

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3.68Ct White Topaz, Round, Vvs-Vs

3.68Ct White Topaz, Round, Vvs-Vs

9.5 mm (calibrated)

$ 39.01

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5.02Ct Medium Pink Morganite, Oval, Transparent

5.02Ct Medium Pink Morganite, Oval, Transparent

14 x 10 mm (calibrated)

$ 66.26

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0.18Ctw L Diamond, Round, Vvs-Vs

0.18Ctw L Diamond, Round, Vvs-Vs

2.8 mm (calibrated)

$ 394.02

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2.74Ctw White Topaz, Cushion, Vvs-Vs

2.74Ctw White Topaz, Cushion, Vvs-Vs

4.6 x 4.5 mm

$ 18.08

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2.08Ct Medium Yellow Golden Beryl, Oval, Vvs

2.08Ct Medium Yellow Golden Beryl, Oval, Vvs

10 x 8 mm (calibrated)

$ 68.64

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0.31Ct Light Pink Morganite, Oval, Vs

0.31Ct Light Pink Morganite, Oval, Vs

5.4 x 3.8 mm

$ 15.50

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1.24Ct Warm Yellow Beryl, Trillion, Vvs-Vs

1.24Ct Warm Yellow Beryl, Trillion, Vvs-Vs

8 x 8 mm (calibrated)

$ 29.76

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0.15Ctw J Diamond, Round, Vvs-Vs

0.15Ctw J Diamond, Round, Vvs-Vs

2.8 mm (calibrated)

$ 323.09

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0.80Ct Orange Pink Spinel, Cushion, Vvs-Vs

0.80Ct Orange Pink Spinel, Cushion, Vvs-Vs

5.8 x 5 mm

$ 48.00

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1.08Ct Light Green Chrysoberyl, Pear Shape, Vvs-Vs

1.08Ct Light Green Chrysoberyl, Pear Shape, Vvs-Vs

7.8 x 5.2 mm

$ 151.64

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0.03Ct Black Diamond, Round, Opaque

0.03Ct Black Diamond, Round, Opaque

2 mm (calibrated)

$ 28.80

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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

It was a good experience looking for and finding a nice amethyst stone

Posted By N/a in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I love the products. I've bought them as gifts and people love my gifts

Posted By Love it! in February, 2026
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

Overall Rating -> 10 star ratings

It was easy and to the point

Posted By Victorius in May, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

Excellent selection of stones -including ones I had never heard of before -nice site and fairly easy to use

Posted By DrD in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great site for finding specific stones and sizes for individual pieces of jewelry

Posted By Designer in December, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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