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Home › Gemstones › Natural Untreated Gemstones

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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1.05ct Yellow Citrine, Square, VVS-VS

1.05ct Yellow Citrine, Square, VVS-VS

6 x 6 mm (calibrated)

$ 7.32

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4.74ct Multicolor Rainbow Pyrite, Pear Shape, Opaque

4.74ct Multicolor Rainbow Pyrite, Pear Shape, Opaque

16.6 x 10.7 mm

$ 12.27

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0.75ct Yellow Beryl, Cushion, VS

0.75ct Yellow Beryl, Cushion, VS

7 x 5 mm (calibrated)

$ 17.93

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0.80ct Yellow Beryl, Oval, VVS-VS

0.80ct Yellow Beryl, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 19.92

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0.95ct Green Tourmaline, Emerald Cut, VVS-VS

0.95ct Green Tourmaline, Emerald Cut, VVS-VS

6.2 x 4.6 mm

$ 23.66

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13.97ct Multicolor Pietersite, Baguette, Opaque

13.97ct Multicolor Pietersite, Baguette, Opaque

20.4 x 12.3 mm

$ 34.23

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2.61ctw Red Pyrope Garnet, Marquise, VVS-VS

2.61ctw Red Pyrope Garnet, Marquise, VVS-VS

10 x 5.1 mm

$ 22.87

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1.37ct Pink Tourmaline, Emerald Cut, VS

1.37ct Pink Tourmaline, Emerald Cut, VS

10.8 x 4.6 mm

$ 103.57

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28.36ct Multicolor Pietersite, Oval, Opaque

28.36ct Multicolor Pietersite, Oval, Opaque

30 x 22 mm (calibrated)

$ 93.22

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1.80ct Violet Amethyst, Emerald Cut, VVS-VS

1.80ct Violet Amethyst, Emerald Cut, VVS-VS

9 x 7 mm (calibrated)

$ 13.80

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29.90ct Violet Amethyst, Oval, VVS
Amethyst Product Video (734689)

29.90ct Violet Amethyst, Oval, VVS

28 x 19.9 mm

$ 238.24

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11.10ct Turquoise Grandidierite, Oval, Translucent

11.10ct Turquoise Grandidierite, Oval, Translucent

14.8 x 13.3 mm

$ 364.83

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3.84ctw Violet Amethyst, Oval, VVS-VS

3.84ctw Violet Amethyst, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 21.03

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1.42ct Orange Hessonite Garnet, Oval, VS-SI

1.42ct Orange Hessonite Garnet, Oval, VS-SI

7.5 x 6.2 mm

$ 28.29

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215.80ct White Dendritic Agate, Oval, Opaque
Dendritic Agate Product Video (693547)

215.80ct White Dendritic Agate, Oval, Opaque

71.8 x 57.7 mm

$ 107.47

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2.49ct Brown Diamond, Pear Shape, SI
Diamond Product Video (382045)

2.49ct Brown Diamond, Pear Shape, SI

7.9 x 7.6 mm

$ 4,652.76

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27.87ct Multicolor Tiger'S Eye Matrix, Oval, Opaque

27.87ct Multicolor Tiger'S Eye Matrix, Oval, Opaque

28 x 18.6 mm

$ 27.76

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9.31ct Multicolor Coral, Oval, Translucent
Coral Product Video (565406)

9.31ct Multicolor Coral, Oval, Translucent

19.3 x 12.1 mm

$ 30.59

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1.13ct Brown Color-Change Garnet, Cushion, VVS-VS

1.13ct Brown Color-Change Garnet, Cushion, VVS-VS

5.7 x 5.4 mm

$ 90.28

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3.38ct Violet Amethyst, Pear Shape, VS

3.38ct Violet Amethyst, Pear Shape, VS

13 x 9 mm (calibrated)

$ 25.93

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1.95ct Orange Sphalerite, Oval, VS-SI
Sphalerite Product Video (691360)

1.95ct Orange Sphalerite, Oval, VS-SI

8 x 6 mm (calibrated)

$ 97.11

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0.64ct Yellow Color-Change Diaspore, Pear Shape, VS-SI

0.64ct Yellow Color-Change Diaspore, Pear Shape, VS-SI

6.9 x 4.2 mm

$ 33.78

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0.56ct Orange Spessartite Garnet, Oval, VS-SI

0.56ct Orange Spessartite Garnet, Oval, VS-SI

5.2 x 4.2 mm

$ 19.52

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1.78ctw Green Peridot, Oval, VS

1.78ctw Green Peridot, Oval, VS

7 x 5 mm (calibrated)

$ 24.82

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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 -> 7 star ratings

Easy, quick.

Posted By Mich in June, 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

A pleasant experience and many choices to choose from

Posted By Krackenking in November, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Always a good quality stone. Priced fairly and shipped promptly. Answers emails quickly

Posted By Ron T in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Would have bought an indigo and selenite, but neither listed. But, you do offer quite a large assortment otherwise.

Posted By JD in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I have been very happy with my prior purchases and enjoy the website experience.

Posted By Trouble in November, 2025
Source: Bizrate
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