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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

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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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11.59ct Yellow Citrine, Pear Shape, VVS-VS

11.59ct Yellow Citrine, Pear Shape, VVS-VS

16.6 x 15 mm

$ 104.31

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2.77ct Blue Chalcedony, Oval, Transparent

2.77ct Blue Chalcedony, Oval, Transparent

10 x 8 mm (calibrated)

$ 5.52

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7.33ct Yellow Rutile Quartz, Round, Transparent

7.33ct Yellow Rutile Quartz, Round, Transparent

14 mm (calibrated)

$ 19.92

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16.80ct Violet Amethyst, Oval, IF

16.80ct Violet Amethyst, Oval, IF

20 x 15 mm (calibrated)

$ 111.55

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4.47ct Pink Rose Quartz, Emerald Cut, Transparent

4.47ct Pink Rose Quartz, Emerald Cut, Transparent

10 x 10 mm (calibrated)

$ 24.49

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0.67ct Blue Kyanite, Round, SI

0.67ct Blue Kyanite, Round, SI

5 mm (calibrated)

$ 16.68

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18.98ct Gray Hematite, Emerald Cut, Opaque

18.98ct Gray Hematite, Emerald Cut, Opaque

20.3 x 15.8 mm

$ 20.80

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22.14ct White Jadeite, Oval, Translucent

22.14ct White Jadeite, Oval, Translucent

19.8 x 16.9 mm

$ 26.44

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1.70ct Pink Strawberry Quartz, Oval, Translucent

1.70ct Pink Strawberry Quartz, Oval, Translucent

8.1 x 6.3 mm

$ 8.50

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6.16ct Brown Tiger'S Eye, Oval, Opaque

6.16ct Brown Tiger'S Eye, Oval, Opaque

14 x 10 mm (calibrated)

$ 6.13

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0.40ct Blue Kyanite, Round, SI

0.40ct Blue Kyanite, Round, SI

4.2 mm

$ 9.96

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1.04ct Orange Sunstone, Oval, Translucent

1.04ct Orange Sunstone, Oval, Translucent

8 x 6 mm (calibrated)

$ 7.25

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3.20ct Pink Tourmaline, Emerald Cut, VS-SI

3.20ct Pink Tourmaline, Emerald Cut, VS-SI

10.9 x 6.2 mm

$ 157.77

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4.51ct Multicolor Fire Agate, Oval, Opaque

4.51ct Multicolor Fire Agate, Oval, Opaque

12 x 10 mm (calibrated)

$ 34.68

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9.12ctw Green Prehnite, Oval, Transparent

9.12ctw Green Prehnite, Oval, Transparent

8 x 8 mm (calibrated)

$ 58.28

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2.09ct Violet Amethyst, Square, VVS-VS

2.09ct Violet Amethyst, Square, VVS-VS

8 x 8 mm (calibrated)

$ 16.65

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16.30ct Multicolor Cinnabar, Oval, Opaque

16.30ct Multicolor Cinnabar, Oval, Opaque

20 x 15 mm (calibrated)

$ 19.07

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1.33ct Orange Hessonite Garnet, Square, VS-SI

1.33ct Orange Hessonite Garnet, Square, VS-SI

6 x 6 mm (calibrated)

$ 22.31

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1.44ct Violet Amethyst, Trillion, VS

1.44ct Violet Amethyst, Trillion, VS

8 x 8 mm (calibrated)

$ 9.51

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2.90ct Green Malachite, Oval, Opaque

2.90ct Green Malachite, Oval, Opaque

9 x 6.7 mm

$ 5.78

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47.12ct Multicolor Rhodonite, Oval, Opaque

47.12ct Multicolor Rhodonite, Oval, Opaque

31.6 x 22.1 mm

$ 27.22

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6.76ct Violet Amethyst, Marquise, VS

6.76ct Violet Amethyst, Marquise, VS

19.5 x 10.2 mm

$ 51.84

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4.01ct Yellow Citrine, Cushion, VVS-VS

4.01ct Yellow Citrine, Cushion, VVS-VS

14.2 x 8.6 mm

$ 30.76

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0.30ct Pink Morganite, Round, VS

0.30ct Pink Morganite, Round, VS

4.7 mm

$ 12.45

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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

Excellent options

Posted By CJ in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

A pleasant experience and many choices to choose from

Posted By Krackenking in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Over pretty well experience the your website no complaints about it very easy reliable service provided

Posted By Blas in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

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

Posted By Lynn in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

All good

Posted By DouscheGift in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

On the clarity options it goes "and better" so if youre looking for si specifically and you click si and better it still shows you basically everything. It just removes the opaques. Itd be nice if it was vs only, vss only, si only, etc

Posted By Iamnotakrustykrab in December, 2025
Source: Bizrate
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