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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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3.76ctw Multicolor Andalusite, Round, VS

3.76ctw Multicolor Andalusite, Round, VS

3.1 mm

$ 165.32

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4.83ct White Topaz, Round, VVS-VS

4.83ct White Topaz, Round, VVS-VS

10 mm (calibrated)

$ 18.59

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1.53ct Yellow Beryl, Oval, VVS

1.53ct Yellow Beryl, Oval, VVS

9 x 7 mm (calibrated)

$ 30.48

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0.78ct Yellow Beryl, Oval, VS

0.78ct Yellow Beryl, Oval, VS

7.5 x 5.3 mm

$ 19.42

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1.61ct Yellow Diamond, Round, SI
Diamond Product Video (378640)

1.61ct Yellow Diamond, Round, SI

7 mm (calibrated)

$ 3,474.38

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0.97ct Yellow Morganite, Oval, VVS-VS

0.97ct Yellow Morganite, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 42.51

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0.53ct Purple Spinel, Cushion, VVS-VS

0.53ct Purple Spinel, Cushion, VVS-VS

4.8 x 4.4 mm

$ 36.95

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1.23ct Purple Spinel, Cushion, VS

1.23ct Purple Spinel, Cushion, VS

6.5 x 6.1 mm

$ 104.46

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0.31ct Pink Morganite, Round, VS

0.31ct Pink Morganite, Round, VS

4.7 mm

$ 13.89

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0.14ctw White Diamond, Round, VVS-VS

0.14ctw White Diamond, Round, VVS-VS

2.7 mm (calibrated)

$ 250.28

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0.96ct Gray Cat'S Eye Alexandrite, Oval, Opaque

0.96ct Gray Cat'S Eye Alexandrite, Oval, Opaque

6.4 x 4.8 mm

$ 278.88

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0.12ctw Black Diamond, Square, Opaque

0.12ctw Black Diamond, Square, Opaque

1.9 x 1.8 mm

$ 59.76

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2.84ctw Pink Morganite, Round, VS

2.84ctw Pink Morganite, Round, VS

7 mm (calibrated)

$ 117.86

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0.69ct Black Diamond, Square, Opaque
Diamond Product Video (677845)

0.69ct Black Diamond, Square, Opaque

4.5 x 4.3 mm

$ 327.56

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1.16ct Yellow Beryl, Oval, VVS-VS

1.16ct Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 25.41

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2.59ct Yellow Beryl, Oval, VVS

2.59ct Yellow Beryl, Oval, VVS

11 x 9 mm (calibrated)

$ 56.76

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0.09ctw Black Diamond, Round, Opaque

0.09ctw Black Diamond, Round, Opaque

2.2 mm (calibrated)

$ 40.79

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1.69ctw Multicolor Andalusite, Oval, VS

1.69ctw Multicolor Andalusite, Oval, VS

5.2 x 4.2 mm

$ 90.62

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1.13ct Purple Spinel, Cushion, VVS

1.13ct Purple Spinel, Cushion, VVS

6.5 x 5.7 mm

$ 63.21

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0.09ctw Black Diamond, Round, Opaque

0.09ctw Black Diamond, Round, Opaque

2 mm (calibrated)

$ 26.15

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0.58ct Pink Morganite, Pear Shape, VVS-VS

0.58ct Pink Morganite, Pear Shape, VVS-VS

8.3 x 4.6 mm

$ 34.95

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1.38ct Pink Morganite, Cushion, VVS-VS

1.38ct Pink Morganite, Cushion, VVS-VS

10.9 x 5.6 mm

$ 61.85

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4.05ct White Topaz, Round, VS
Topaz Product Video (571487)

4.05ct White Topaz, Round, VS

10 mm (calibrated)

$ 22.19

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0.74ct Orange Morganite, Pear Shape, VVS-VS

0.74ct Orange Morganite, Pear Shape, VVS-VS

7.7 x 5.8 mm

$ 32.43

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 have been very happy with my prior purchases and enjoy the website experience.

Posted By Trouble in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

The citrine gems are beautiful. I appreciated that each stone was individually shown on the website so I could see exactly what I was getting. No mystery person selecting random stones for me. The documentation included with each gem was high quality as well. Great price and arrived as expected.

Posted By Jen in December, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Very easy to navigate with a great selection.

Posted By Bar181 in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I am filling a small treasure chest and picked a nice amethyst.

Posted By VinnyD in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very neat and to the point

Posted By Botha in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

selection was broad and the check out was quick. Great site

Posted By JC Karl in September, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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