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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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4.50ctw Yellow Citrine, Oval, VVS

4.50ctw Yellow Citrine, Oval, VVS

10 x 8 mm (calibrated)

$ 24.65

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1.60ct Orange Hessonite Garnet, Emerald Cut, VS-SI

1.60ct Orange Hessonite Garnet, Emerald Cut, VS-SI

6 x 6 mm (calibrated)

$ 29.80

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2.10ct Orange Sunstone, Round, Translucent

2.10ct Orange Sunstone, Round, Translucent

8.5 mm (calibrated)

$ 12.57

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0.62ct Green Peridot, Marquise, VS

0.62ct Green Peridot, Marquise, VS

8 x 4 mm (calibrated)

$ 9.88

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12.03ct Multicolor Agate, Fancy, Opaque

12.03ct Multicolor Agate, Fancy, Opaque

17.9 x 8.3 mm

$ 21.07

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2.87ct Black Cat'S Eye Scapolite, Round, Translucent

2.87ct Black Cat'S Eye Scapolite, Round, Translucent

9 mm (calibrated)

$ 15.73

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9.43ct Multicolor Agate, Oval, Opaque

9.43ct Multicolor Agate, Oval, Opaque

12.9 x 12.1 mm

$ 7.51

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2.07ctw Red Rhodolite Garnet, Oval, VS

2.07ctw Red Rhodolite Garnet, Oval, VS

7 x 5 mm (calibrated)

$ 54.98

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4.62ct Multicolor Pietersite, Trillion, Opaque

4.62ct Multicolor Pietersite, Trillion, Opaque

14 x 14 mm (calibrated)

$ 11.19

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6.00ct Multicolor Labradorite, Pear Shape, Transparent/Translucent

6.00ct Multicolor Labradorite, Pear Shape, Transparent/Translucent

14 x 10 mm (calibrated)

$ 13.26

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1.46ct Orange Hessonite Garnet, Round, VS

1.46ct Orange Hessonite Garnet, Round, VS

6.5 mm (calibrated)

$ 27.19

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1.07ct Orange Zircon, Oval, VVS-VS

1.07ct Orange Zircon, Oval, VVS-VS

5.9 x 4.9 mm

$ 15.99

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0.92ct Yellow Citrine, Heart, Transparent

0.92ct Yellow Citrine, Heart, Transparent

6 x 6 mm (calibrated)

$ 5.35

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7.96ct Multicolor Agate, Oval, Translucent

7.96ct Multicolor Agate, Oval, Translucent

12.3 x 11.2 mm

$ 13.48

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0.81ct Yellow Color-Change Diaspore, Emerald Cut, VVS

0.81ct Yellow Color-Change Diaspore, Emerald Cut, VVS

6.9 x 4.3 mm

$ 42.76

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2.92ct Red Almandine Garnet, Pear Shape, VVS

2.92ct Red Almandine Garnet, Pear Shape, VVS

12 x 8 mm (calibrated)

$ 109.06

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0.78ct White Sillimanite Cat'S Eye, Oval, Transparent

0.78ct White Sillimanite Cat'S Eye, Oval, Transparent

7 x 5 mm (calibrated)

$ 2.99

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24.40ct Multicolor Jasper, Fancy, Opaque

24.40ct Multicolor Jasper, Fancy, Opaque

32.1 x 10 mm

$ 14.70

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0.79ct Green Peridot, Oval, VS

0.79ct Green Peridot, Oval, VS

7 x 5 mm (calibrated)

$ 5.51

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55.45ct Multicolor Agate, Fancy, Translucent

55.45ct Multicolor Agate, Fancy, Translucent

23.9 x 16.3 mm

$ 97.11

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1.39ctw Yellow Citrine, Pear Shape, VVS-VS

1.39ctw Yellow Citrine, Pear Shape, VVS-VS

7 x 5 mm (calibrated)

$ 9.13

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0.42ct Pink Morganite, Pear Shape, VS

0.42ct Pink Morganite, Pear Shape, VS

6.6 x 4.7 mm

$ 18.82

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8.28ct Multicolor Pietersite, Pear Shape, Opaque

8.28ct Multicolor Pietersite, Pear Shape, Opaque

20.8 x 12.8 mm

$ 32.11

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4.87ct Violet Amethyst, Pear Shape, Transparent

4.87ct Violet Amethyst, Pear Shape, Transparent

14.7 x 9.4 mm

$ 29.10

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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

Very good and simple exchange

Posted By Waylon in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

The website has a good selection, the interface is very intuitive.

Posted By PhoenixFeatherJewelry in January, 2026
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

Overall Rating -> 10 star ratings

I am filling a small treasure chest and picked a nice amethyst.

Posted By VinnyD in August, 2025
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

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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