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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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2.10ctw Orange Citrine, Heart, VS

2.10ctw Orange Citrine, Heart, VS

7 x 7 mm (calibrated)

$ 17.43

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7.95ct Black Tourmaline, Pear Shape, Opaque

7.95ct Black Tourmaline, Pear Shape, Opaque

15.4 x 12.9 mm

$ 39.59

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48.61ct Violet Amethyst, Heart, VVS
Amethyst Product Video (734712)

48.61ct Violet Amethyst, Heart, VVS

24.1 x 23.2 mm

$ 387.33

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1.25ct Orange Moonstone, Marquise, Translucent

1.25ct Orange Moonstone, Marquise, Translucent

10.1 x 5.3 mm

$ 2.49

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8.34ctw Green Prehnite, Oval, Transparent

8.34ctw Green Prehnite, Oval, Transparent

9 x 7 mm (calibrated)

$ 45.68

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0.76ct Green Peridot, Emerald Cut, VVS-VS

0.76ct Green Peridot, Emerald Cut, VVS-VS

6.3 x 4.9 mm

$ 11.35

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3.22ct Multicolor Labradorite, Baguette, Translucent

3.22ct Multicolor Labradorite, Baguette, Translucent

9 x 7 mm (calibrated)

$ 4.42

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20.02ct Multicolor Quartz With Marcasite, Fancy, Opaque
Quartz With Marcasite Product Video (617893)

20.02ct Multicolor Quartz With Marcasite, Fancy, Opaque

35.2 x 11.5 mm

$ 109.67

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0.76ct Green Peridot, Oval, VS

0.76ct Green Peridot, Oval, VS

7 x 5 mm (calibrated)

$ 5.30

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1.53ct Brown Color-Change Garnet, Oval, VS

1.53ct Brown Color-Change Garnet, Oval, VS

7 x 5.9 mm

$ 122.23

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7.12ct Multicolor Fire Agate, Fancy, Opaque

7.12ct Multicolor Fire Agate, Fancy, Opaque

17.4 x 9.8 mm

$ 55.86

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1.41ct Green Tourmaline, Oval, Transparent

1.41ct Green Tourmaline, Oval, Transparent

7.1 x 5.8 mm

$ 24.17

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1.94ctw Violet Amethyst, Marquise, VS

1.94ctw Violet Amethyst, Marquise, VS

10 x 5 mm (calibrated)

$ 12.88

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3.04ctw White Topaz, Cushion, VVS-VS

3.04ctw White Topaz, Cushion, VVS-VS

4.6 x 4.5 mm

$ 16.65

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8.10ctw Multicolor Labradorite, Round, Translucent

8.10ctw Multicolor Labradorite, Round, Translucent

12 mm (calibrated)

$ 17.75

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92.59ctw Multicolor Rhodochrosite, Sphere / Ball, Opaque
Rhodochrosite Product Video (447526)

92.59ctw Multicolor Rhodochrosite, Sphere / Ball, Opaque

16.9 mm

$ 202.89

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0.92ct Violet Amethyst, Marquise, VS

0.92ct Violet Amethyst, Marquise, VS

10 x 5 mm (calibrated)

$ 6.11

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3.36ct White Moonstone, Round, Translucent

3.36ct White Moonstone, Round, Translucent

9 mm (calibrated)

$ 9.20

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0.85ct Yellow Sphalerite, Oval, SI

0.85ct Yellow Sphalerite, Oval, SI

5.7 x 4.6 mm

$ 42.33

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1.13ct Green Tourmaline, Emerald Cut, VVS

1.13ct Green Tourmaline, Emerald Cut, VVS

15.6 x 2.9 mm

$ 27.24

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0.42ct Yellow Color-Change Diaspore, Trillion, VS

0.42ct Yellow Color-Change Diaspore, Trillion, VS

4.7 x 4.5 mm

$ 22.17

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4.62ct Multicolor Labradorite, Pear Shape, Translucent

4.62ct Multicolor Labradorite, Pear Shape, Translucent

11 x 9 mm (calibrated)

$ 10.22

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0.80ct Orange Zircon, Oval, VVS

0.80ct Orange Zircon, Oval, VVS

6 x 4 mm (calibrated)

$ 11.95

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1.59ct Yellow Beryl, Cushion, VVS

1.59ct Yellow Beryl, Cushion, VVS

9 x 7 mm (calibrated)

$ 34.84

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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

Good, hope gem quality is good and genuine

Posted By Varun in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

the selection is good as are the prices

Posted By Old man in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

My current project is something BLUE . Opal earrings with matching tennis bracelet for her wedding. The opals and sixty two sapphires VVS & VS are AMAZINGLY BEAUTIFUL. The private jewelers were impressed by the clarity and inclusion free of the sapphires . I want to say thank you for the High quality sapphires that I purchased for my daughtera's wedding.

Posted By My real name Dean or Wandering about in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Web site is very simple to navigate Selection is terrific

Posted By ToRa.62 in April, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

The website was easy to use and there were a lot of good options, I was satisfied.

Posted By Brielly in January, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Easy to use. Many options to find the right gemstone

Posted By Liz in May, 2026
Source: Bizrate
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