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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
Single
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10.40ct Blue Aquamarine, Emerald Cut, Translucent

10.40ct Blue Aquamarine, Emerald Cut, Translucent

18 x 9.9 mm

$ 215.80

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4.23ctw Red Pyrope Garnet, Marquise, VVS-VS

4.23ctw Red Pyrope Garnet, Marquise, VVS-VS

10.1 x 5 mm

$ 37.07

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10.08ct Green Jadeite, Oval, Translucent

10.08ct Green Jadeite, Oval, Translucent

17.4 x 14.5 mm

$ 33.13

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0.28ct Yellow Sphalerite, Round, SI-I1

0.28ct Yellow Sphalerite, Round, SI-I1

3.8 mm

$ 13.94

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0.32ct Yellow Color-Change Diaspore, Oval, VVS

0.32ct Yellow Color-Change Diaspore, Oval, VVS

4.8 x 3.9 mm

$ 16.89

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16.70ct White Rainbow Moonstone, Pear Shape, Translucent

16.70ct White Rainbow Moonstone, Pear Shape, Translucent

21.8 x 19.8 mm

$ 116.43

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3.21ct Yellow Apatite, Emerald Cut, VVS-VS

3.21ct Yellow Apatite, Emerald Cut, VVS-VS

9 x 9 mm (calibrated)

$ 165.29

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3.44ctw Yellow Citrine, Round, VVS

3.44ctw Yellow Citrine, Round, VVS

8 mm (calibrated)

$ 27.41

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2.40ct Blue Chalcedony, Oval, Transparent

2.40ct Blue Chalcedony, Oval, Transparent

10 x 8 mm (calibrated)

$ 4.78

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11.24ct White Rose Quartz, Flower Cut, Transparent

11.24ct White Rose Quartz, Flower Cut, Transparent

17.4 x 17.4 mm

$ 24.63

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0.87ct Yellow Color-Change Diaspore, Emerald Cut, VS

0.87ct Yellow Color-Change Diaspore, Emerald Cut, VS

5.7 x 4.6 mm

$ 26.69

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0.98ct Blue Kyanite, Oval, SI

0.98ct Blue Kyanite, Oval, SI

7 x 5 mm (calibrated)

$ 19.52

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3.92ct Multicolor Fire Agate, Round, Opaque

3.92ct Multicolor Fire Agate, Round, Opaque

9 mm (calibrated)

$ 33.20

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22.38ctw Green Prehnite, Flower Cut, Transparent

22.38ctw Green Prehnite, Flower Cut, Transparent

16.2 x 10.6 mm

$ 33.83

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1.23ct Orange Hessonite Garnet, Square, VS

1.23ct Orange Hessonite Garnet, Square, VS

6 x 6 mm (calibrated)

$ 20.63

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1.53ctw Yellow Citrine, Heart, VVS-VS

1.53ctw Yellow Citrine, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 11.74

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1.95ct Violet Amethyst, Heart, VVS

1.95ct Violet Amethyst, Heart, VVS

8 x 8 mm (calibrated)

$ 13.60

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27.74ct Multicolor Jasper, Fancy, Opaque

27.74ct Multicolor Jasper, Fancy, Opaque

35.2 x 10 mm

$ 8.28

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9.08ct Violet Amethyst, Oval, Transparent

9.08ct Violet Amethyst, Oval, Transparent

14.9 x 13.1 mm

$ 54.27

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3.57ct Yellow Citrine, Oval, VVS

3.57ct Yellow Citrine, Oval, VVS

11 x 9 mm (calibrated)

$ 21.82

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1.39ctw Green Peridot, Oval, VS

1.39ctw Green Peridot, Oval, VS

7 x 5 mm (calibrated)

$ 19.38

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5.03ct Yellow Citrine, Oval, VVS-VS

5.03ct Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 30.20

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3.25ct Orange Zircon, Oval, VVS
Zircon Product Video (746024)

3.25ct Orange Zircon, Oval, VVS

9.5 x 6.6 mm

$ 242.78

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0.66ct Yellow Citrine, Pear Shape, VVS-VS

0.66ct Yellow Citrine, Pear Shape, VVS-VS

7 x 5 mm (calibrated)

$ 3.29

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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 -> 9 star ratings

They have literally everything on this website! The prices are also pretty good, I was able to find plenty of nice stones that I could afford!

Posted By JC in March, 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 -> 10 star ratings

It was great

Posted By Nik in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Very good place to buy gemstones

Posted By Elansary in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I was able to find what I've been looking for.

Posted By Tree Dog in April, 2026
Source: Bizrate
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