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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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4.15ctw Violet Amethyst, Oval, VVS-VS

4.15ctw Violet Amethyst, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 22.74

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3.61ct Red Almandine Garnet, Pear Shape, VS

3.61ct Red Almandine Garnet, Pear Shape, VS

12 x 8 mm (calibrated)

$ 29.96

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3.04ct Green Prehnite, Oval, Transparent/Translucent

3.04ct Green Prehnite, Oval, Transparent/Translucent

9 x 7.8 mm

$ 9.00

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0.53ct Orange Sphalerite, Oval, SI-I1

0.53ct Orange Sphalerite, Oval, SI-I1

4.8 x 4.4 mm

$ 26.39

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2.99ct Yellow Sphene, Oval, Translucent

2.99ct Yellow Sphene, Oval, Translucent

8.7 x 8 mm

$ 16.38

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2.25ctw Red Pyrope Garnet, Marquise, VVS-VS

2.25ctw Red Pyrope Garnet, Marquise, VVS-VS

10 x 5.2 mm

$ 19.72

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1.82ct Yellow Citrine, Square, VS

1.82ct Yellow Citrine, Square, VS

7.3 x 7.2 mm

$ 13.95

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9.48ct Multicolor Agate, Oval, Opaque

9.48ct Multicolor Agate, Oval, Opaque

13.4 x 12.4 mm

$ 8.97

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0.56ctw Blue Kyanite, Round, VS

0.56ctw Blue Kyanite, Round, VS

3.7 mm

$ 13.94

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2.43ctw Red Pyrope Garnet, Marquise, VVS-VS

2.43ctw Red Pyrope Garnet, Marquise, VVS-VS

9.9 x 5 mm

$ 21.30

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39.98ct Multicolor Jasper, Oval, Opaque

39.98ct Multicolor Jasper, Oval, Opaque

35.2 x 25.7 mm

$ 21.90

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4.72ct Orange Sunstone, Oval, Translucent

4.72ct Orange Sunstone, Oval, Translucent

12 x 10 mm (calibrated)

$ 28.08

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0.79ctw Yellow Citrine, Heart, VVS

0.79ctw Yellow Citrine, Heart, VVS

5 x 5 mm (calibrated)

$ 5.51

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0.49ct Yellow Citrine, Marquise, VS

0.49ct Yellow Citrine, Marquise, VS

8 x 4 mm (calibrated)

$ 3.42

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5.47ct White Rainbow Moonstone, Pear Shape, Translucent

5.47ct White Rainbow Moonstone, Pear Shape, Translucent

19.8 x 9.6 mm

$ 38.14

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1.08ct Green Tourmaline, Emerald Cut, VVS-VS

1.08ct Green Tourmaline, Emerald Cut, VVS-VS

16 x 2.9 mm

$ 28.39

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1.24ct Blue Kyanite, Oval, SI

1.24ct Blue Kyanite, Oval, SI

7 x 5 mm (calibrated)

$ 24.70

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0.38ct Green Peridot, Round, Transparent
Peridot Product Video (742643)

0.38ct Green Peridot, Round, Transparent

4 mm (calibrated)

$ 5.62

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3.67ct Turquoise Fluorite, Oval, Transparent

3.67ct Turquoise Fluorite, Oval, Transparent

9.4 x 7.6 mm

$ 14.62

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5.33ct Green Actinolite Cat'S Eye, Oval, Translucent

5.33ct Green Actinolite Cat'S Eye, Oval, Translucent

12.8 x 10.4 mm

$ 37.16

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8.42ct Multicolor Fire Agate, Fancy, Opaque

8.42ct Multicolor Fire Agate, Fancy, Opaque

17.5 x 11.7 mm

$ 50.74

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2.34ctw Yellow Golden Beryl, Oval, VVS-VS

2.34ctw Yellow Golden Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 64.09

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17.63ct White Rainbow Moonstone, Round, Transparent

17.63ct White Rainbow Moonstone, Round, Transparent

18 mm (calibrated)

$ 316.07

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9.62ct Brown Tiger'S Eye, Oval, Opaque

9.62ct Brown Tiger'S Eye, Oval, Opaque

18 x 13 mm (calibrated)

$ 9.58

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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 think therea's no problem

Posted By Napoleon in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Good, hope gem quality is good and genuine

Posted By Varun in May, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Nothing bad to report. Everything is as expected. The gems and the price are all very good.

Posted By Dafanatic in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Found a beautiful opal at a great price. I was not disappointed when it arrived. Even better in person.

Posted By Fried Rice in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Easy and functional

Posted By Dessa in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

My experience was done with ease

Posted By Barb in October, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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