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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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1.17ctw Green Peridot, Marquise, VS

1.17ctw Green Peridot, Marquise, VS

8.1 x 4.1 mm

$ 17.94

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12.95ct Gray Jadeite, Oval, Translucent

12.95ct Gray Jadeite, Oval, Translucent

18.7 x 12.1 mm

$ 51.59

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2.69ct Yellow Citrine, Oval, VVS-VS

2.69ct Yellow Citrine, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 18.76

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2.97ct Violet Amethyst, Trillion, VVS-VS

2.97ct Violet Amethyst, Trillion, VVS-VS

10 x 10 mm (calibrated)

$ 20.71

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1.25ctw Green Peridot, Marquise, VS

1.25ctw Green Peridot, Marquise, VS

8.1 x 4.1 mm

$ 19.17

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13.94ct Brown Smoky Quartz, Emerald Cut, VVS
Smoky Quartz Product Video (408035)

13.94ct Brown Smoky Quartz, Emerald Cut, VVS

15 x 15 mm (calibrated)

$ 27.34

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1.51ctw Red Pyrope Garnet, Square, VS

1.51ctw Red Pyrope Garnet, Square, VS

5 x 5 mm (calibrated)

$ 11.59

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5.95ct Multicolor Rainbow Pyrite, Trillion, Opaque

5.95ct Multicolor Rainbow Pyrite, Trillion, Opaque

17.3 x 12.4 mm

$ 20.92

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7.84ct Multicolor Labradorite, Round, Translucent

7.84ct Multicolor Labradorite, Round, Translucent

13 mm (calibrated)

$ 9.37

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2.18ctw Red Spessartite Garnet, Round, VS

2.18ctw Red Spessartite Garnet, Round, VS

4.5 mm (calibrated)

$ 74.04

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4.29ct Pink Strawberry Quartz, Oval, Translucent

4.29ct Pink Strawberry Quartz, Oval, Translucent

10 x 8 mm (calibrated)

$ 32.90

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5.17ct Green Malachite, Oval, Opaque

5.17ct Green Malachite, Oval, Opaque

12 x 10 mm (calibrated)

$ 3.97

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5.79ct Violet Amethyst, Oval, Transparent

5.79ct Violet Amethyst, Oval, Transparent

13 x 11 mm (calibrated)

$ 40.37

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1.61ct Yellow Citrine, Round, VVS

1.61ct Yellow Citrine, Round, VVS

8 mm (calibrated)

$ 12.83

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9.70ctw Multicolor Coral, Pear Shape, Translucent

9.70ctw Multicolor Coral, Pear Shape, Translucent

16.1 x 10.4 mm

$ 30.30

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1.16ct Red Rhodolite Garnet, Oval, VS

1.16ct Red Rhodolite Garnet, Oval, VS

7 x 5 mm (calibrated)

$ 30.81

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2.61ct Orange Hessonite Garnet, Oval, VS

2.61ct Orange Hessonite Garnet, Oval, VS

9.3 x 7.7 mm

$ 46.45

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0.86ctw Multicolor Opal, Pear Shape, Transparent

0.86ctw Multicolor Opal, Pear Shape, Transparent

8 x 5 mm (calibrated)

$ 21.41

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4.91ctw Orange Hessonite Garnet, Emerald Cut, VS

4.91ctw Orange Hessonite Garnet, Emerald Cut, VS

7 x 5 mm (calibrated)

$ 107.58

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21.33ct Brown Jasper, Fancy, Opaque

21.33ct Brown Jasper, Fancy, Opaque

40.3 x 12.4 mm

$ 32.72

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1.93ct Green Tourmaline, Emerald Cut, VVS-VS

1.93ct Green Tourmaline, Emerald Cut, VVS-VS

20.9 x 3.3 mm

$ 40.55

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2.32ct Yellow Golden Beryl, Oval, VS

2.32ct Yellow Golden Beryl, Oval, VS

10 x 8 mm (calibrated)

$ 63.54

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0.83ct Yellow Color-Change Diaspore, Square, VVS-VS

0.83ct Yellow Color-Change Diaspore, Square, VVS-VS

5 x 5 mm (calibrated)

$ 34.30

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18.90ctw Multicolor Labradorite, Pear Shape, Translucent

18.90ctw Multicolor Labradorite, Pear Shape, Translucent

16 x 12 mm (calibrated)

$ 24.44

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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!

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I was able to find what I wanted very easily!

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I have a beautiful emerald I purchased from a company names gemselect and they are awesome! You should try them out?

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Very good. I have made several purchases as a collector over the years, and have never been dissapointed in the selection, process, or delivery.

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It was great

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this site is awesome. I was able to look at the products think about purchasing and come back and find the same products. With the amount of inventory gem select has. Its awesome to be able to filter the way that they allow you too.

Posted By Tommyp in November, 2025
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Overall Rating -> 9 star ratings

Plan on purchasing on an ongoing basis. So far.....so good....

Posted By Jim in January, 2026
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