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Home › Gemstones › Iolite

Natural Iolite Gemstones

Explore natural iolite gemstones in rich violet-blue shades, perfect for custom jewelry and collectors.

Blue Iolite
Violet Iolite
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0.20ct Natural Dark Bluish Purple Iolite, Square, VVS, Photo A

0.20ct Natural Dark Bluish Purple Iolite, Square, VVS

Iolite

0.20ct1 pc
$ 7.97
3.3 x 3.2 mm
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0.24ct Natural Medium Violet Iolite, Octagon / Emerald Cut, VS-SI, Photo A

0.24ct Natural Medium Violet Iolite, Octagon / Emerald Cut, VS-SI

Iolite

0.24ct1 pc
$ 9.56
5 x 3 mm (calibrated)
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0.20ctw Natural Light Purplish Blue Iolite, Square, VS, Photo A

0.20ctw Natural Light Purplish Blue Iolite, Square, VS

Iolite

0.20ct total2 pcs
$ 7.97
2.6 x 2.6 mm
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0.24ct Natural Dark Bluish Purple Iolite, Octagon / Emerald Cut, VS, Photo A

0.24ct Natural Dark Bluish Purple Iolite, Octagon / Emerald Cut, VS

Iolite

0.24ct1 pc
$ 9.56
4.6 x 3.2 mm
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0.26ct Natural Deep Purple Iolite, Marquise, VS, Photo A

0.26ct Natural Deep Purple Iolite, Marquise, VS

Iolite

0.26ct1 pc
$ 10.36
5.7 x 2.9 mm
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0.24ct Natural Dark Violet Iolite, Baguette, VS-SI, Photo A

0.24ct Natural Dark Violet Iolite, Baguette, VS-SI

Iolite

0.24ct1 pc
$ 9.56
5 x 3 mm (calibrated)
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0.26ct Natural Dark Bluish Purple Iolite, Baguette, VS-SI, Photo A

0.26ct Natural Dark Bluish Purple Iolite, Baguette, VS-SI

Iolite

0.26ct1 pc
$ 10.36
5 x 3 mm (calibrated)
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0.25ct Natural Dark Blue Iolite, Octagon / Emerald Cut, VS-SI, Photo A

0.25ct Natural Dark Blue Iolite, Octagon / Emerald Cut, VS-SI

Iolite

0.25ct1 pc
$ 9.96
5 x 3 mm (calibrated)
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0.33ct Natural Deep Purple Iolite, Baguette, VS, Photo A

0.33ct Natural Deep Purple Iolite, Baguette, VS

Iolite

0.33ct1 pc
$ 13.15
5 x 3 mm (calibrated)
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0.30ct Natural Medium Violet Iolite, Baguette, VS-SI, Photo A

0.30ct Natural Medium Violet Iolite, Baguette, VS-SI

Iolite

0.30ct1 pc
$ 11.95
5 x 3 mm (calibrated)
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0.23ct Natural Bright Violet Iolite, Baguette, VS, Photo A

0.23ct Natural Bright Violet Iolite, Baguette, VS

Iolite

0.23ct1 pc
$ 9.16
5 x 3 mm (calibrated)
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0.30ct Natural Medium Violet Iolite, Baguette, VS, Photo A

0.30ct Natural Medium Violet Iolite, Baguette, VS

Iolite

0.30ct1 pc
$ 11.95
5 x 3 mm (calibrated)
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0.25ct Natural Deep Purple Iolite, Octagon / Emerald Cut, VS, Photo A

0.25ct Natural Deep Purple Iolite, Octagon / Emerald Cut, VS

Iolite

0.25ct1 pc
$ 9.96
5 x 3 mm (calibrated)
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0.21ctw Natural Dark Blue Iolite, Square, VS, Photo A

0.21ctw Natural Dark Blue Iolite, Square, VS

Iolite

0.21ct total2 pcs
$ 8.37
2.7 x 2.6 mm
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0.29ct Natural Deep Violet Iolite, Octagon / Emerald Cut, VS, Photo A

0.29ct Natural Deep Violet Iolite, Octagon / Emerald Cut, VS

Iolite

0.29ct1 pc
$ 11.55
5 x 3 mm (calibrated)
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0.18ctw Natural Dark Bluish Purple Iolite, Square, VS, Photo A

0.18ctw Natural Dark Bluish Purple Iolite, Square, VS

Iolite

0.18ct total2 pcs
$ 7.17
2.6 x 2.6 mm
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0.24ct Natural Deep Purple Iolite, Pear Shape, VVS-VS, Photo A

0.24ct Natural Deep Purple Iolite, Pear Shape, VVS-VS

Iolite

0.24ct1 pc
$ 9.56
4.3 x 4.2 mm
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0.26ct Natural Pinkish Violet Iolite, Octagon / Emerald Cut, VS-SI, Photo A

0.26ct Natural Pinkish Violet Iolite, Octagon / Emerald Cut, VS-SI

Iolite

0.26ct1 pc
$ 10.36
5 x 3 mm (calibrated)
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0.28ct Natural Medium Light-Violet Iolite, Square, VVS, Photo A

0.28ct Natural Medium Light-Violet Iolite, Square, VVS

Iolite

0.28ct1 pc
$ 11.16
4 x 4 mm (calibrated)
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0.30ct Natural Dark Bluish Purple Iolite, Octagon / Emerald Cut, VS, Photo A

0.30ct Natural Dark Bluish Purple Iolite, Octagon / Emerald Cut, VS

Iolite

0.30ct1 pc
$ 11.95
5 x 3 mm (calibrated)
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0.21ct Natural Silverish Blue Iolite, Octagon / Emerald Cut, VVS-VS, Photo A

0.21ct Natural Silverish Blue Iolite, Octagon / Emerald Cut, VVS-VS

Iolite

0.21ct1 pc
$ 8.37
5 x 3 mm (calibrated)
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0.27ct Natural Dark Bluish Purple Iolite, Octagon / Emerald Cut, VS, Photo A

0.27ct Natural Dark Bluish Purple Iolite, Octagon / Emerald Cut, VS

Iolite

0.27ct1 pc
$ 10.76
5 x 3 mm (calibrated)
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0.22ctw Natural Dark Bluish Purple Iolite, Square, VVS-VS, Photo A

0.22ctw Natural Dark Bluish Purple Iolite, Square, VVS-VS

Iolite

0.22ct total2 pcs
$ 8.76
2.7 x 2.6 mm
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0.19ct Natural Medium Light-Violet Iolite, Marquise, VVS, Photo A

0.19ct Natural Medium Light-Violet Iolite, Marquise, VVS

Iolite

0.19ct1 pc
$ 7.57
5.6 x 3 mm
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0.21ctw Natural Dark Bluish Purple Iolite, Square, VS, Photo A

0.21ctw Natural Dark Bluish Purple Iolite, Square, VS

Iolite

0.21ct total2 pcs
$ 8.37
2.7 x 2.6 mm
View Details
Add to Cart
0.27ct Natural Dark Bluish Purple Iolite, Pear Shape, VS, Photo A

0.27ct Natural Dark Bluish Purple Iolite, Pear Shape, VS

Iolite

0.27ct1 pc
$ 10.76
4.2 x 4.1 mm
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0.26ct Natural Deep Blue Iolite, Baguette, VS, Photo A

0.26ct Natural Deep Blue Iolite, Baguette, VS

Iolite

0.26ct1 pc
$ 10.36
5 x 3 mm (calibrated)
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0.26ct Natural Intense Violet Iolite, Baguette, VS, Photo A

0.26ct Natural Intense Violet Iolite, Baguette, VS

Iolite

0.26ct1 pc
$ 10.36
5 x 3 mm (calibrated)
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0.18ct Natural Medium Violet Iolite, Octagon / Emerald Cut, VVS, Photo A

0.18ct Natural Medium Violet Iolite, Octagon / Emerald Cut, VVS

Iolite

0.18ct1 pc
$ 7.17
4.9 x 2.9 mm
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0.23ct Natural Deep Purple Iolite, Round, VS-SI, Photo A

0.23ct Natural Deep Purple Iolite, Round, VS-SI

Iolite

0.23ct1 pc
$ 9.16
4.2 mm
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0.17ctw Natural Light Purplish Blue Iolite, Square, VS, Photo A

0.17ctw Natural Light Purplish Blue Iolite, Square, VS

Iolite

0.17ct total2 pcs
$ 6.77
2.6 x 2.5 mm
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0.17ct Natural Medium Light-Violet Iolite, Square, VVS, Photo A

0.17ct Natural Medium Light-Violet Iolite, Square, VVS

Iolite

0.17ct1 pc
$ 6.77
3.3 x 3.2 mm
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Why Buy Iolite from GemSelect?

Natural Iolite Gemstones

Our natural iolite gemstones are carefully selected for their deep violet-blue color and excellent transparency. Also known as cordierite, iolite is prized for its unique pleochroism, showing different shades when viewed from different angles.

Loose Iolite Stones Online

Buy loose iolite stones online with confidence at GemSelect. Choose from a wide variety of shapes, sizes, and calibrated options, all backed by detailed specifications and worldwide shipping.

Loose Iolite Gemstones for Jewelry Making

Iolite for Custom Jewelry

Iolite is a durable gemstone with a Mohs hardness of 7 to 7.5, making it suitable for rings, earrings, pendants, and bracelets. Its rich blue-violet tones offer an affordable alternative to sapphire for elegant jewelry designs.

Faceted Iolite Stones

Faceted iolite gemstones maximize brilliance and highlight the stone’s natural color shifts. Popular cuts include oval, round, pear, and cushion shapes for both classic and modern settings.

Iolite Cabochons

Iolite cabochons feature smooth, polished surfaces that emphasize color depth and subtle internal characteristics. They are ideal for distinctive designer pieces and artisan jewelry.

Calibrated Iolite Sizes

We offer calibrated iolite gemstones in standard sizes such as 6 mm, 7 mm, and 8 x 6 mm, making them easy to set into pre-made jewelry mountings.

Iolite Birthstone & Meaning

Iolite is often associated with intuition, clarity, and inner vision. It is sometimes linked to the zodiac sign Sagittarius and is valued by collectors for both its beauty and symbolism.

Learn more about the properties, history, and gemological details on our Iolite Information Page.

FAQs

Is iolite a natural gemstone?

Yes, our iolite gemstones are 100% natural. Any treatments, if present, are fully disclosed for complete transparency.

What makes iolite unique?

Iolite is known for strong pleochroism, meaning it can display different colors such as blue, violet, and gray depending on the viewing angle.

Is iolite suitable for everyday rings?

With a Mohs hardness of 7 to 7.5, iolite is durable enough for occasional daily wear, though protective settings are recommended for rings.

Is iolite the same as cordierite?

Yes, iolite is the gem-quality variety of the mineral cordierite. The names are often used interchangeably in the gem trade.

Do you offer iolite in calibrated sizes?

Yes, we stock calibrated iolite gemstones in standard millimeter sizes suitable for commercial and custom jewelry settings.

Is iolite a birthstone?

Iolite is not a traditional modern birthstone, but it is sometimes associated with Sagittarius and is occasionally used as an alternative December gemstone.

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 needed a very specific color of tourmaline and Gem Select had it. I had to get the client to agree and then ordered the stone. It arrived better than pictured and we all were very happy.

Posted By Tim W in February, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

I've purchased things from GemSelect before. What you see is what you get, which is not always the case with gem sites online. You can find some good value with gem select, and I will buy from them again.

Posted By Meyeusername in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I always purchase my stones from GemSelect, their products are high quality and customer service is always great. I also like the fact that I am able to purchase unique items

Posted By Desperaux in November, 2025
Source: Bizrate

Overall Rating -> 7 star ratings

Easy, quick.

Posted By Mich in June, 2026
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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

Enjoy every moment

Posted By Ferns in October, 2025
Source: Bizrate
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