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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
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Violet Natural Untreated Gemstones
White Natural Untreated Gemstones
Yellow Natural Untreated Gemstones
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1.51ct Green Tourmaline, Emerald Cut, VVS-VS

1.51ct Green Tourmaline, Emerald Cut, VVS-VS

7.5 x 5.8 mm

$ 75.20

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2.68ct Green Prehnite, Oval, Transparent

2.68ct Green Prehnite, Oval, Transparent

9.3 x 8 mm

$ 8.22

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11.50ct White Dendritic Agate, Pear Shape, Opaque

11.50ct White Dendritic Agate, Pear Shape, Opaque

20 x 15 mm (calibrated)

$ 9.16

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19.45ctw Multicolor Labradorite, Pear Shape, Translucent

19.45ctw Multicolor Labradorite, Pear Shape, Translucent

16 x 12 mm (calibrated)

$ 43.01

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1.38ct Green Tourmaline, Cushion, VS
Tourmaline Product Video (743196)

1.38ct Green Tourmaline, Cushion, VS

8 x 6 mm (calibrated)

$ 160.36

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1.62ct Pink Strawberry Quartz, Round, Translucent

1.62ct Pink Strawberry Quartz, Round, Translucent

8 mm (calibrated)

$ 12.42

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1.95ct Green Peridot, Cushion, VS

1.95ct Green Peridot, Cushion, VS

7.9 x 7.3 mm

$ 76.48

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6.67ctw Multicolor Opal, Round, Transparent
Opal Product Video (466299)

6.67ctw Multicolor Opal, Round, Transparent

8 mm (calibrated)

$ 186.01

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1.26ct Yellow Beryl, Trillion, VVS-VS

1.26ct Yellow Beryl, Trillion, VVS-VS

8 x 7.5 mm

$ 25.10

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4.03ctw Yellow Citrine, Oval, VVS-VS

4.03ctw Yellow Citrine, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 26.49

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1.97ct Yellow Citrine, Trillion, VVS-VS

1.97ct Yellow Citrine, Trillion, VVS-VS

9 x 9 mm (calibrated)

$ 12.19

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31.48ct Golden Opal, Oval, Opaque

31.48ct Golden Opal, Oval, Opaque

27.1 x 18.7 mm

$ 157.40

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3.17ctw Pink Strawberry Quartz, Oval, Transparent

3.17ctw Pink Strawberry Quartz, Oval, Transparent

9 x 7 mm (calibrated)

$ 16.73

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3.75ct Multicolor Fire Agate, Fancy, Opaque

3.75ct Multicolor Fire Agate, Fancy, Opaque

12 x 8 mm (calibrated)

$ 26.63

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3.45ct Brown Tiger'S Eye, Pear Shape, Opaque

3.45ct Brown Tiger'S Eye, Pear Shape, Opaque

10 x 10 mm (calibrated)

$ 4.47

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3.50ct Yellow Citrine, Pear Shape, VVS-VS

3.50ct Yellow Citrine, Pear Shape, VVS-VS

12 x 10 mm (calibrated)

$ 21.75

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0.12ctw Black Diamond, Round, Opaque

0.12ctw Black Diamond, Round, Opaque

2.3 mm (calibrated)

$ 54.38

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7.39ct Pink Rose Quartz, Emerald Cut, Transparent

7.39ct Pink Rose Quartz, Emerald Cut, Transparent

12 x 12 mm (calibrated)

$ 40.49

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2.04ct Green Tourmaline, Emerald Cut, VS

2.04ct Green Tourmaline, Emerald Cut, VS

9.1 x 6.2 mm

$ 237.05

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1.77ctw Yellow Citrine, Marquise, VS

1.77ctw Yellow Citrine, Marquise, VS

9.2 x 4.9 mm

$ 14.10

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37.85ct Green Jadeite, Oval, Translucent

37.85ct Green Jadeite, Oval, Translucent

28.8 x 23 mm

$ 62.20

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1.33ctw Green Peridot, Oval, VVS

1.33ctw Green Peridot, Oval, VVS

7 x 5 mm (calibrated)

$ 18.54

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19.28ctw Multicolor Jasper, Pear Shape, Opaque

19.28ctw Multicolor Jasper, Pear Shape, Opaque

24.2 x 13.8 mm

$ 10.95

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19.09ct Multicolor Jasper, Cushion, Opaque

19.09ct Multicolor Jasper, Cushion, Opaque

29.8 x 12.5 mm

$ 15.78

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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

I had a very easy time navigating the web page and using filters to find what I was looking for. The varied selection was nice to see and pricing is clear and fair.

Posted By Mattick in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I love the ability to choose from many options of shapes, gemstone type, color, and so forth. It is fun!

Posted By Geof in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

The process was pleasant, I chose to purchase the stone traditional to the month of March as it is the month in which I was born.

Posted By Maharishi in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

the selection is good as are the prices

Posted By Old man in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

On the clarity options it goes "and better" so if youre looking for si specifically and you click si and better it still shows you basically everything. It just removes the opaques. Itd be nice if it was vs only, vss only, si only, etc

Posted By Iamnotakrustykrab in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great experience. I can't wait to explore on the website further.

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