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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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3.24ctw Red Pyrope Garnet, Heart, VS

3.24ctw Red Pyrope Garnet, Heart, VS

6 x 6 mm (calibrated)

$ 24.85

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1.95ct Orange Hessonite Garnet, Cushion, VS

1.95ct Orange Hessonite Garnet, Cushion, VS

7 x 7 mm (calibrated)

$ 29.05

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1.00ct Blue Kyanite, Oval, SI

1.00ct Blue Kyanite, Oval, SI

7 x 5 mm (calibrated)

$ 24.90

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10.96ct Green Tsavorite Garnet, Oval, Translucent
Tsavorite Garnet Product Video (521022)

10.96ct Green Tsavorite Garnet, Oval, Translucent

18.8 x 11.9 mm

$ 240.15

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7.09ct Violet Amethyst, Pear Shape, VS

7.09ct Violet Amethyst, Pear Shape, VS

16 x 12 mm (calibrated)

$ 54.37

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1.36ctw Red Pyrope Garnet, Square, VVS

1.36ctw Red Pyrope Garnet, Square, VVS

5 x 5 mm (calibrated)

$ 10.42

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7.59ct Black Star Diopside, Oval, Opaque

7.59ct Black Star Diopside, Oval, Opaque

12 x 10 mm (calibrated)

$ 37.80

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1.98ct Red Almandine Garnet, Oval, VVS-VS

1.98ct Red Almandine Garnet, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 73.95

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0.89ct Orange Zircon, Oval, VVS-VS

0.89ct Orange Zircon, Oval, VVS-VS

6.3 x 4.2 mm

$ 13.30

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5.80ctw Brown Tiger'S Eye, Oval, Opaque

5.80ctw Brown Tiger'S Eye, Oval, Opaque

10 x 8 mm (calibrated)

$ 5.78

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5.72ctw Multicolor Opal, Round, Translucent

5.72ctw Multicolor Opal, Round, Translucent

8 mm (calibrated)

$ 175.48

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1.17ctw Green Peridot, Marquise, VS

1.17ctw Green Peridot, Marquise, VS

8 x 4 mm (calibrated)

$ 9.32

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1.87ctw Yellow Citrine, Trillion, VS

1.87ctw Yellow Citrine, Trillion, VS

7 x 7 mm (calibrated)

$ 10.25

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21.63ct Violet Amethyst, Emerald Cut, VVS

21.63ct Violet Amethyst, Emerald Cut, VVS

20.4 x 18.4 mm

$ 172.35

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0.72ct Green Peridot, Oval, VVS-VS

0.72ct Green Peridot, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 10.04

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22.00ct Green Jade, Fancy, Translucent

22.00ct Green Jade, Fancy, Translucent

27.6 x 12.9 mm

$ 13.74

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4.38ct Green Jade, Oval, Opaque

4.38ct Green Jade, Oval, Opaque

12 x 10 mm (calibrated)

$ 8.72

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8.59ct Multicolor Agate, Oval, Opaque

8.59ct Multicolor Agate, Oval, Opaque

14 x 12 mm (calibrated)

$ 14.54

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0.37ct Green Kornerupine, Oval, VS

0.37ct Green Kornerupine, Oval, VS

5.3 x 3.9 mm

$ 20.27

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1.00ct White Rainbow Moonstone, Oval, Transparent

1.00ct White Rainbow Moonstone, Oval, Transparent

8 x 6 mm (calibrated)

$ 32.88

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0.82ct Yellow Color-Change Diaspore, Cushion, VS

0.82ct Yellow Color-Change Diaspore, Cushion, VS

7.1 x 4.4 mm

$ 26.95

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0.98ct Purple Spinel, Cushion, VS

0.98ct Purple Spinel, Cushion, VS

5.8 x 4.9 mm

$ 69.06

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20.64ct White Rainbow Moonstone, Oval, Translucent

20.64ct White Rainbow Moonstone, Oval, Translucent

22.5 x 14.3 mm

$ 20.56

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13.92ct Green Maw-Sit-Sit, Round, Opaque
Maw-Sit-Sit Product Video (476911)

13.92ct Green Maw-Sit-Sit, Round, Opaque

14 mm (calibrated)

$ 45.76

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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

I've made several purchases over the last 8 years and I've never been less than happy with any of them.

Posted By Jess in July, 2026
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Overall Rating -> 10 star ratings

Great website, easy to navigate, and loads quickly. Have bought here before, very pleased!

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Overall Rating -> 9 star ratings

Fast and reliable service.

Posted By Zæck in December, 2025
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Overall Rating -> 9 star ratings

I think therea's no problem

Posted By Napoleon in August, 2025
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Overall Rating -> 10 star ratings

Absolutely love the website, selection and products. Can you guys add a gemstones with inclusions tab. I like those it'd be nice to have them all in one place but i do understand it would be alot of work to go through and categorize them. Thank you anyways

Posted By The homie edgar in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

It was great

Posted By Nik in June, 2026
Source: Bizrate
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