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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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1.00ct Blue Kyanite, Oval, VS-SI

1.00ct Blue Kyanite, Oval, VS-SI

7 x 5 mm (calibrated)

$ 20.82

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3.87ct Turquoise Fluorite, Pear Shape, Transparent

3.87ct Turquoise Fluorite, Pear Shape, Transparent

12 x 8 mm (calibrated)

$ 15.92

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35.50ct Multicolor Jasper, Oval, Opaque

35.50ct Multicolor Jasper, Oval, Opaque

30.4 x 23 mm

$ 22.17

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2.72ct Yellow Citrine, Oval, VVS-VS

2.72ct Yellow Citrine, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 14.90

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0.96ct Orange Zircon, Oval, VVS

0.96ct Orange Zircon, Oval, VVS

5.7 x 4.9 mm

$ 14.34

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15.66ct Green Opal, Oval, Opaque

15.66ct Green Opal, Oval, Opaque

20 x 15 mm (calibrated)

$ 33.53

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2.77ct Multicolor Labradorite, Pear Shape, Translucent

2.77ct Multicolor Labradorite, Pear Shape, Translucent

10 x 8 mm (calibrated)

$ 6.13

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14.62ct Multicolor Pietersite, Cushion, Opaque

14.62ct Multicolor Pietersite, Cushion, Opaque

29.1 x 14.2 mm

$ 43.68

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0.88ct Yellow Beryl, Trillion, VVS

0.88ct Yellow Beryl, Trillion, VVS

7.3 x 3.9 mm

$ 17.53

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52.44ct Multicolor Moss Agate, Oval, Translucent

52.44ct Multicolor Moss Agate, Oval, Translucent

43.6 x 28.7 mm

$ 41.78

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15.16ct Violet Amethyst, Round, VVS

15.16ct Violet Amethyst, Round, VVS

16 mm (calibrated)

$ 105.69

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0.78ct Yellow Color-Change Diaspore, Emerald Cut, VS-SI

0.78ct Yellow Color-Change Diaspore, Emerald Cut, VS-SI

5.3 x 4.6 mm

$ 28.97

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68.00ct Multicolor Ruby-Zoisite, Oval, Opaque
Ruby-Zoisite Product Video (484091)

68.00ct Multicolor Ruby-Zoisite, Oval, Opaque

32 x 23 mm

$ 111.75

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0.91ct Brown Color-Change Garnet, Emerald Cut, VS

0.91ct Brown Color-Change Garnet, Emerald Cut, VS

6.2 x 4.9 mm

$ 72.70

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2.70ct Green Tourmaline, Emerald Cut, VVS-VS
Tourmaline Product Video (413829)

2.70ct Green Tourmaline, Emerald Cut, VVS-VS

15.8 x 4.6 mm

$ 107.57

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8.35ctw Green Prehnite, Oval, Transparent

8.35ctw Green Prehnite, Oval, Transparent

7.4 x 7 mm

$ 45.75

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21.60ctw White Dendritic Agate, Pear Shape, Opaque

21.60ctw White Dendritic Agate, Pear Shape, Opaque

20 x 15 mm (calibrated)

$ 14.34

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1.54ct Blue Kyanite, Oval, SI

1.54ct Blue Kyanite, Oval, SI

8 x 8 mm (calibrated)

$ 32.06

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3.06ctw Red Rhodolite Garnet, Square, VS

3.06ctw Red Rhodolite Garnet, Square, VS

5 x 5 mm (calibrated)

$ 26.79

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14.94ctw Green Aventurine, Pear Shape, Translucent

14.94ctw Green Aventurine, Pear Shape, Translucent

18 x 13 mm (calibrated)

$ 29.76

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9.99ct Multicolor Labradorite, Marquise, Translucent

9.99ct Multicolor Labradorite, Marquise, Translucent

20 x 10 mm (calibrated)

$ 22.09

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1.21ct Green Chrysoprase, Pear Shape, Translucent

1.21ct Green Chrysoprase, Pear Shape, Translucent

9.3 x 6.5 mm

$ 10.04

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3.26ctw Yellow Citrine, Oval, VVS-VS

3.26ctw Yellow Citrine, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 21.43

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13.67ct Multicolor Agate, Oval, Opaque

13.67ct Multicolor Agate, Oval, Opaque

15.8 x 13.7 mm

$ 12.94

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

Easy and good price

Posted By Bry_guy in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Love how easy the site is to use. Really love that the pictures are of actual product.

Posted By LeAnn in January, 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

Great prices!!! High quality gemstones.

Posted By Ricky in October, 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

Filters need to be improved but rest of website is great

Posted By Rock hound in December, 2025
Source: Bizrate
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