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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

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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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13.64ct Brown Tiger'S Eye, Baguette, Opaque

13.64ct Brown Tiger'S Eye, Baguette, Opaque

18 x 13 mm (calibrated)

$ 13.59

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7.34ctw Green Amazonite, Cushion, Opaque

7.34ctw Green Amazonite, Cushion, Opaque

7.3 x 7.2 mm

$ 17.85

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5.34ct Yellow Citrine, Oval, VVS-VS

5.34ct Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 32.06

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7.38ct Multicolor Labradorite, Pear Shape, Translucent

7.38ct Multicolor Labradorite, Pear Shape, Translucent

16 x 12 mm (calibrated)

$ 16.32

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0.54ct Turquoise Aquamarine, Emerald Cut, VVS-VS

0.54ct Turquoise Aquamarine, Emerald Cut, VVS-VS

6 x 4 mm (calibrated)

$ 75.60

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22.46ct Gray Hematite, Square, Opaque

22.46ct Gray Hematite, Square, Opaque

16.7 x 16 mm

$ 22.64

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34.39ctw Multicolor Fossil Coral, Fancy, Opaque

34.39ctw Multicolor Fossil Coral, Fancy, Opaque

22.8 x 12.8 mm

$ 44.46

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12.95ct Turquoise Grandidierite, Oval, Translucent
Grandidierite Product Video (471783)

12.95ct Turquoise Grandidierite, Oval, Translucent

17 x 13.9 mm

$ 2,837.60

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0.80ct Orange Fire Opal, Oval, Translucent

0.80ct Orange Fire Opal, Oval, Translucent

8 x 6 mm (calibrated)

$ 18.26

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17.79ct Pink Rose Quartz, Oval, Transparent/Translucent

17.79ct Pink Rose Quartz, Oval, Transparent/Translucent

17.7 x 14.8 mm

$ 25.34

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2.61ct Yellow Rutile Topaz, Emerald Cut, Transparent

2.61ct Yellow Rutile Topaz, Emerald Cut, Transparent

8.9 x 7.6 mm

$ 54.16

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5.53ctw Brown Moonstone, Flower Cut, Translucent

5.53ctw Brown Moonstone, Flower Cut, Translucent

10.4 x 10.1 mm

$ 24.24

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15.91ct Violet Amethyst, Emerald Cut, VVS

15.91ct Violet Amethyst, Emerald Cut, VVS

18 x 13 mm (calibrated)

$ 110.92

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5.75ct Green Rutile Quartz, Oval, Transparent

5.75ct Green Rutile Quartz, Oval, Transparent

17.4 x 8.4 mm

$ 12.43

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4.68ct Green Jade, Oval, Opaque

4.68ct Green Jade, Oval, Opaque

12 x 10 mm (calibrated)

$ 9.32

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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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1.28ct Green Peridot, Oval, VS

1.28ct Green Peridot, Oval, VS

8 x 6 mm (calibrated)

$ 11.47

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2.78ctw Green Prehnite, Oval, Transparent

2.78ctw Green Prehnite, Oval, Transparent

6.9 x 6.2 mm

$ 15.23

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0.59ct Orange Zircon, Oval, VVS

0.59ct Orange Zircon, Oval, VVS

5.1 x 4.2 mm

$ 8.81

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3.73ct Yellow Apatite, Pear Shape, VS
Apatite Product Video (514780)

3.73ct Yellow Apatite, Pear Shape, VS

10 x 10 mm (calibrated)

$ 192.07

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8.32ctw White Topaz, Square, VVS

8.32ctw White Topaz, Square, VVS

5 x 5 mm (calibrated)

$ 69.68

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1.27ct Orange Fire Opal, Oval, Transparent

1.27ct Orange Fire Opal, Oval, Transparent

10 x 7 mm (calibrated)

$ 44.27

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7.16ctw Multicolor Labradorite, Marquise, Translucent

7.16ctw Multicolor Labradorite, Marquise, Translucent

14 x 7 mm (calibrated)

$ 15.84

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1.37ct Yellow Color-Change Diaspore, Baguette, VVS-VS

1.37ct Yellow Color-Change Diaspore, Baguette, VVS-VS

9.7 x 4.7 mm

$ 65.64

View Gem
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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

good navigation and simple interface.

Posted By Dave in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Always get a nice gemstone. Just like the picture. Never disappointed

Posted By Ron T in June, 2026
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

The citrine gems are beautiful. I appreciated that each stone was individually shown on the website so I could see exactly what I was getting. No mystery person selecting random stones for me. The documentation included with each gem was high quality as well. Great price and arrived as expected.

Posted By Jen in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

this site is awesome. I was able to look at the products think about purchasing and come back and find the same products. With the amount of inventory gem select has. Its awesome to be able to filter the way that they allow you too.

Posted By Tommyp in November, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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