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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
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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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1.61ct Pink Morganite, Oval, VS

1.61ct Pink Morganite, Oval, VS

9 x 7 mm (calibrated)

$ 123.47

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1.17ct Yellow Beryl, Trillion, VVS

1.17ct Yellow Beryl, Trillion, VVS

8 x 8 mm (calibrated)

$ 23.31

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0.80ct Pink Morganite, Pear Shape, VVS-VS

0.80ct Pink Morganite, Pear Shape, VVS-VS

9.9 x 5 mm

$ 48.21

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1.30ct Pink Morganite, Pear Shape, VVS-VS

1.30ct Pink Morganite, Pear Shape, VVS-VS

10.7 x 5.7 mm

$ 99.70

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0.73ct Yellow Beryl, Oval, VS

0.73ct Yellow Beryl, Oval, VS

7 x 5 mm (calibrated)

$ 13.94

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0.28ct White Diamond, Round, VVS
Diamond Product Video (747220)

0.28ct White Diamond, Round, VVS

4 mm (calibrated)

$ 470.10

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6.96ctw Black Spinel, Round, Opaque

6.96ctw Black Spinel, Round, Opaque

9 mm (calibrated)

$ 22.87

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0.70ct Yellow Morganite, Pear Shape, VS

0.70ct Yellow Morganite, Pear Shape, VS

7.3 x 5.8 mm

$ 30.68

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1.22ct Yellow Beryl, Trillion, VS

1.22ct Yellow Beryl, Trillion, VS

8 x 8 mm (calibrated)

$ 29.17

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0.82ct Yellow Beryl, Oval, VVS-VS

0.82ct Yellow Beryl, Oval, VVS-VS

7.9 x 5.6 mm

$ 16.33

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2.08ct Yellow Beryl, Oval, VVS

2.08ct Yellow Beryl, Oval, VVS

10 x 8 mm (calibrated)

$ 41.43

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1.18ct Yellow Beryl, Trillion, VVS

1.18ct Yellow Beryl, Trillion, VVS

8 x 8 mm (calibrated)

$ 28.20

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1.52ct Yellow Beryl, Round, VVS

1.52ct Yellow Beryl, Round, VVS

8 mm (calibrated)

$ 30.28

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0.67ct Purple Spinel, Oval, VVS-VS

0.67ct Purple Spinel, Oval, VVS-VS

5.7 x 4.8 mm

$ 55.61

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0.07ct Black Diamond, Round, Opaque

0.07ct Black Diamond, Round, Opaque

2.6 mm (calibrated)

$ 23.96

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0.90ct Yellow Morganite, Pear Shape, VS

0.90ct Yellow Morganite, Pear Shape, VS

8.4 x 6 mm

$ 49.30

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6.57ctw Black Spinel, Round, Opaque

6.57ctw Black Spinel, Round, Opaque

9 mm (calibrated)

$ 28.79

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14.47ctw Black Spinel, Round, Opaque

14.47ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 47.56

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0.23ctw White Diamond, Round, VVS-VS
Diamond Product Video (565140)

0.23ctw White Diamond, Round, VVS-VS

3 mm (calibrated)

$ 379.88

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25.08ctw Black Spinel, Oval, Opaque

25.08ctw Black Spinel, Oval, Opaque

18 x 13 mm (calibrated)

$ 82.43

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0.45ct Pink Morganite, Round, VS

0.45ct Pink Morganite, Round, VS

5.5 mm (calibrated)

$ 18.68

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3.22ctw Yellow Golden Beryl, Oval, VVS-VS

3.22ctw Yellow Golden Beryl, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 70.56

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0.68ct Green Cat'S Eye Alexandrite, Oval, Opaque

0.68ct Green Cat'S Eye Alexandrite, Oval, Opaque

5.5 x 4 mm

$ 141.10

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0.64ct Purple Spinel, Cushion, VS

0.64ct Purple Spinel, Cushion, VS

5.5 x 4.2 mm

$ 44.62

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 -> 8 star ratings

Site worked well and helped me find a rock that matched what I was looking for. Well within budget and I trust it will show up, so that's definitely positive. Not much else to it. Satisfied.

Posted By Big Ricky in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Always get a nice gemstone. Just like the picture. Never disappointed

Posted By Ron T in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

It's always a pleasure doing business with Gem Select. Outstanding products ant very reasonable prices. Thank You One and All.

Posted By G.W. or Bakyow in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Easy to use website

Posted By Mel in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Very pleasant

Posted By Varun in June, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

If you have motion picture, then I will be more satisfied with.

Posted By Ray in November, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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