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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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0.62ct Green Peridot, Marquise, VS

0.62ct Green Peridot, Marquise, VS

8 x 4 mm (calibrated)

$ 9.26

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1.29ct Yellow Citrine, Trillion, VS

1.29ct Yellow Citrine, Trillion, VS

8 x 8 mm (calibrated)

$ 9.89

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1.43ct Red Spinel, Cushion, VS

1.43ct Red Spinel, Cushion, VS

6.7 x 5.9 mm

$ 154.30

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1.47ct Multicolor Opal, Oval, Transparent

1.47ct Multicolor Opal, Oval, Transparent

10 x 7 mm (calibrated)

$ 36.60

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1.40ct Yellow Tourmaline, Round, Transparent

1.40ct Yellow Tourmaline, Round, Transparent

7 mm (calibrated)

$ 24.00

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1.04ct Pink Morganite, Pear Shape, VVS
Morganite Product Video (478215)

1.04ct Pink Morganite, Pear Shape, VVS

11 x 5.2 mm

$ 103.58

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1.05ct Yellow Color-Change Diaspore, Pear Shape, VS

1.05ct Yellow Color-Change Diaspore, Pear Shape, VS

6.9 x 5.6 mm

$ 54.95

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10.65ct Blue Color-Change Fluorite, Round, VS

10.65ct Blue Color-Change Fluorite, Round, VS

14 mm (calibrated)

$ 291.71

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0.67ct Yellow Citrine, Trillion, VS-SI

0.67ct Yellow Citrine, Trillion, VS-SI

6.5 x 6.1 mm

$ 5.56

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26.81ct Violet Amethyst, Pear Shape, VS
Amethyst Product Video (753799)

26.81ct Violet Amethyst, Pear Shape, VS

21.9 x 17.4 mm

$ 222.52

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19.19ct Multicolor Agate, Fancy, Opaque

19.19ct Multicolor Agate, Fancy, Opaque

19.4 x 9.9 mm

$ 33.61

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13.20ct Multicolor Labradorite, Pear Shape, Translucent

13.20ct Multicolor Labradorite, Pear Shape, Translucent

18 x 13 mm (calibrated)

$ 29.18

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2.30ct Orange Moonstone, Cushion, Translucent

2.30ct Orange Moonstone, Cushion, Translucent

9 x 7 mm (calibrated)

$ 4.58

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0.28ct Orange Carnelian, Marquise, Transparent

0.28ct Orange Carnelian, Marquise, Transparent

8 x 4 mm (calibrated)

$ 1.40

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6.91ct Violet Amethyst, Cushion, VVS

6.91ct Violet Amethyst, Cushion, VVS

18 x 9.1 mm

$ 41.29

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0.87ct Purple Rhodolite Garnet, Oval, VS

0.87ct Purple Rhodolite Garnet, Oval, VS

7 x 5 mm (calibrated)

$ 23.11

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12.07ct Black Tourmaline, Oval, Opaque

12.07ct Black Tourmaline, Oval, Opaque

16.9 x 13.6 mm

$ 60.11

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3.64ct Multicolor Pietersite, Cushion, Opaque

3.64ct Multicolor Pietersite, Cushion, Opaque

12 x 10 mm (calibrated)

$ 8.81

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1.27ct Yellow Beryl, Oval, VVS-VS

1.27ct Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 27.83

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0.73ct Orange Hessonite Garnet, Cushion, VS

0.73ct Orange Hessonite Garnet, Cushion, VS

5 x 5 mm (calibrated)

$ 10.86

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2.03ctw Green Peridot, Emerald Cut, VVS-VS

2.03ctw Green Peridot, Emerald Cut, VVS-VS

6 x 4 mm (calibrated)

$ 46.34

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11.90ct Multicolor Agate, Oval, Opaque

11.90ct Multicolor Agate, Oval, Opaque

14 x 12 mm (calibrated)

$ 11.85

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8.79ct Multicolor Agate, Sphere / Ball, Opaque
Agate Product Video (701052)

8.79ct Multicolor Agate, Sphere / Ball, Opaque

10 mm (calibrated)

$ 7.01

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10.25ct Brown Smoky Quartz, Round, VVS-VS

10.25ct Brown Smoky Quartz, Round, VVS-VS

13 mm (calibrated)

$ 20.22

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

I enjoyed the enormous amount of knowledge on your site. It helped me choose the gems I purchased.

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I was able to find what I wanted very easily!

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Overall Rating -> 9 star ratings

Ita's a pretty good and simple way to find gems that youa're looking for amazing selection

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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
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Overall Rating -> 8 star ratings

Good prices

Posted By TRM in October, 2025
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Overall Rating -> 9 star ratings

Very good and simple exchange

Posted By Waylon in March, 2026
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