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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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1.14ct Blue Kyanite, Oval, SI

1.14ct Blue Kyanite, Oval, SI

7 x 5 mm (calibrated)

$ 24.98

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1.87ct Orange Hessonite Garnet, Cushion, VVS-VS

1.87ct Orange Hessonite Garnet, Cushion, VVS-VS

8 x 6 mm (calibrated)

$ 37.25

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0.88ct Gray Spinel, Cushion, VVS-VS

0.88ct Gray Spinel, Cushion, VVS-VS

5.8 x 4.7 mm

$ 73.04

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1.29ct Yellow Golden Beryl, Oval, VS

1.29ct Yellow Golden Beryl, Oval, VS

8 x 6 mm (calibrated)

$ 35.34

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5.37ct Multicolor Pietersite, Oval, Opaque

5.37ct Multicolor Pietersite, Oval, Opaque

13 x 9 mm (calibrated)

$ 13.00

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1.00ct Violet Amethyst, Marquise, VVS

1.00ct Violet Amethyst, Marquise, VVS

10 x 5 mm (calibrated)

$ 6.64

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18.54ct Black Tourmaline, Emerald Cut, Opaque

18.54ct Black Tourmaline, Emerald Cut, Opaque

26.6 x 9.6 mm

$ 92.33

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0.95ct Yellow Beryl, Oval, VS

0.95ct Yellow Beryl, Oval, VS

8 x 6 mm (calibrated)

$ 18.92

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0.52ct Yellow Spessartite Garnet, Oval, VS

0.52ct Yellow Spessartite Garnet, Oval, VS

5 x 4 mm (calibrated)

$ 17.26

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1.68ct Multicolor Labradorite, Pear Shape, Translucent

1.68ct Multicolor Labradorite, Pear Shape, Translucent

9 x 6 mm (calibrated)

$ 3.72

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3.46ct Multicolor Labradorite, Baguette, Translucent

3.46ct Multicolor Labradorite, Baguette, Translucent

9 x 7 mm (calibrated)

$ 4.75

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1.76ct Yellow Citrine, Oval, Transparent

1.76ct Yellow Citrine, Oval, Transparent

8 x 6 mm (calibrated)

$ 9.64

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2.75ctw White Topaz, Cushion, VVS-VS

2.75ctw White Topaz, Cushion, VVS-VS

4.6 x 4.5 mm

$ 15.07

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1.28ct Purple Spinel, Cushion, VS

1.28ct Purple Spinel, Cushion, VS

6.5 x 5.7 mm

$ 105.18

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2.25ctw Yellow Citrine, Trillion, VVS-VS

2.25ctw Yellow Citrine, Trillion, VVS-VS

6 x 6 mm (calibrated)

$ 17.26

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3.57ctw Yellow Citrine, Round, VVS-VS

3.57ctw Yellow Citrine, Round, VVS-VS

8 mm (calibrated)

$ 28.44

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2.78ct Violet Amethyst, Trillion, VVS-VS

2.78ct Violet Amethyst, Trillion, VVS-VS

10 x 10 mm (calibrated)

$ 22.15

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22.13ct Gray Hematite, Baguette, Opaque

22.13ct Gray Hematite, Baguette, Opaque

19.8 x 13.1 mm

$ 20.37

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1.66ct Multicolor Labradorite, Pear Shape, Translucent

1.66ct Multicolor Labradorite, Pear Shape, Translucent

9 x 6 mm (calibrated)

$ 3.68

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2.06ctw Red Pyrope Garnet, Emerald Cut, VS

2.06ctw Red Pyrope Garnet, Emerald Cut, VS

5.8 x 3.8 mm

$ 15.79

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1.30ct Green Tourmaline, Emerald Cut, VS

1.30ct Green Tourmaline, Emerald Cut, VS

7.7 x 4.7 mm

$ 64.74

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0.83ctw Green Peridot, Pear Shape, VVS-VS

0.83ctw Green Peridot, Pear Shape, VVS-VS

6 x 4 mm (calibrated)

$ 7.27

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8.17ct Multicolor Agate, Oval, Opaque

8.17ct Multicolor Agate, Oval, Opaque

14 x 12 mm (calibrated)

$ 13.84

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4.96ct Yellow Citrine, Cushion, Transparent

4.96ct Yellow Citrine, Cushion, Transparent

12 x 10 mm (calibrated)

$ 38.04

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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 -> 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

All good

Posted By Oliver in September, 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 -> 9 star ratings

I do enjoy this website and the wide selection. I would like to see more untreated stones. I also wasn't able to see my past order when I logged in.

Posted By Great selection, ok website in July, 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

Overall Rating -> 10 star ratings

GemSelect offers excellent choices, prices & service- highly recommended! Unfortunately, prior to ordering a replacement gemstone, my jeweler neglected to mention it needed to be one that was a'cushion cuta' to fit the existing mount. Have yet to return/exchangea'

Posted By CJ in March, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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