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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

Choose Size or Size Range
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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8.31Ctw White Topaz, Square, Vvs

8.31Ctw White Topaz, Square, Vvs

5 x 5 mm (calibrated)

$ 83.76

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1.25Ct Wine Purple Spinel, Cushion, Vvs-Vs
Spinel Product Video (743667)

1.25Ct Wine Purple Spinel, Cushion, Vvs-Vs

6.6 x 6.1 mm

$ 150.00

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0.05Ct Black Diamond, Round, Opaque

0.05Ct Black Diamond, Round, Opaque

2.3 mm (calibrated)

$ 19.62

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0.06Ct D Diamond, Marquise, Vvs
Diamond Product Video (740687)

0.06Ct D Diamond, Marquise, Vvs

4 x 1.9 mm

$ 251.25

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9.76Ctw Black Spinel, Round, Opaque

9.76Ctw Black Spinel, Round, Opaque

10 mm (calibrated)

$ 38.65

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0.63Ct Light Golden Morganite, Pear Shape, Vs

0.63Ct Light Golden Morganite, Pear Shape, Vs

7.8 x 5.6 mm

$ 33.26

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1.14Ct Flamingo Pink Morganite, Pear Shape, Vvs-Vs

1.14Ct Flamingo Pink Morganite, Pear Shape, Vvs-Vs

9 x 6 mm (calibrated)

$ 150.48

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1.07Ct Dark Purple Spinel, Pear Shape, Vvs-Vs
Spinel Product Video (353079)

1.07Ct Dark Purple Spinel, Pear Shape, Vvs-Vs

7.3 x 5.5 mm

$ 214.00

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0.07Ct D Diamond, Marquise, Vvs

0.07Ct D Diamond, Marquise, Vvs

4.1 x 2.1 mm

$ 293.12

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1.48Ct Earthy Yellow Beryl, Round, Vvs

1.48Ct Earthy Yellow Beryl, Round, Vvs

8 mm (calibrated)

$ 35.52

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1.39Ct Pinkish Purple Spinel, Cushion, Vs

1.39Ct Pinkish Purple Spinel, Cushion, Vs

6.5 x 6.5 mm

$ 84.17

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4.91Ct Medium Pink Morganite, Oval, Transparent

4.91Ct Medium Pink Morganite, Oval, Transparent

11.8 x 9 mm

$ 64.81

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13.85Ctw Black Spinel, Heart, Opaque

13.85Ctw Black Spinel, Heart, Opaque

12 x 12 mm (calibrated)

$ 91.42

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0.94Ct Very Light Pink Morganite, Oval, Vs

0.94Ct Very Light Pink Morganite, Oval, Vs

7.2 x 5.6 mm

$ 49.63

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1.84Ct Light Golden-Yellow Beryl, Cushion, Vvs

1.84Ct Light Golden-Yellow Beryl, Cushion, Vvs

9 x 7 mm (calibrated)

$ 48.58

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1.89Ctw Medium Pink Morganite, Oval, Vvs-Vs

1.89Ctw Medium Pink Morganite, Oval, Vvs-Vs

8 x 6 mm (calibrated)

$ 124.74

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5.03Ct Medium Pink Morganite, Pear Shape, Transparent

5.03Ct Medium Pink Morganite, Pear Shape, Transparent

16 x 10.1 mm

$ 66.40

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1.17Ct Medium Yellow Beryl, Oval, Vs

1.17Ct Medium Yellow Beryl, Oval, Vs

8 x 6 mm (calibrated)

$ 28.08

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13.48Ctw Black Spinel, Heart, Opaque

13.48Ctw Black Spinel, Heart, Opaque

12 x 12 mm (calibrated)

$ 88.97

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1.48Ct Deep Lavender Spinel, Cushion, Vs

1.48Ct Deep Lavender Spinel, Cushion, Vs

7.4 x 5.8 mm

$ 140.65

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0.64Ct Medium Violet Spinel, Oval, Vs

0.64Ct Medium Violet Spinel, Oval, Vs

5.5 x 4.8 mm

$ 64.00

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19.19Ctw Black Spinel, Round, Opaque

19.19Ctw Black Spinel, Round, Opaque

10 mm (calibrated)

$ 151.98

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0.33Ct Very Light Pink Morganite, Round, Vvs-Vs

0.33Ct Very Light Pink Morganite, Round, Vvs-Vs

4.7 mm

$ 16.50

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1.71Ct Light Earthy Yellow Beryl, Round, Vvs

1.71Ct Light Earthy Yellow Beryl, Round, Vvs

8 mm (calibrated)

$ 41.04

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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

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

Posted By Jim in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Very surprised how quick and efficient it was to checkout and pay. Also found exactly what I was looking for no issues.

Posted By Watson in May, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

If you have motion picture, then I will be more satisfied with.

Posted By Ray in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I was able to find what I wanted very easily!

Posted By Lenny in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I have shopped at Gemselect for nearly 20 years. I especially like that you see pictures of the exact gem you are purchasing. You are a trusted source.

Posted By DNaber in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Easy process.

Posted By Crafty Seabee in March, 2026
Source: Bizrate
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