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Natural Iolite Gemstones

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

Iolite Weight
Iolite Size
Iolite Clarity
Iolite Price

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For Example: 6-7
For Example: 8-9
Bi-color
Black
Blue Iolite
Brown
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Orange
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Violet Iolite
White
Yellow
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0.23Ct Pinkish Violet Iolite, Emerald Cut, Vvs-Vs

5 x 2.8 mm

$ 11.04

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0.27Ct Violet Blue Iolite, Emerald Cut, Vs-Si

5 x 3 mm (calibrated)

$ 12.96

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0.39Ct Dark Bluish Purple Iolite, Marquise, Vs

7.6 x 3.9 mm

$ 18.72

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0.31Ct Medium Violet Iolite, Emerald Cut, Vs-Si

5 x 3 mm (calibrated)

$ 14.88

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0.26Ct Intense Violet Iolite, Baguette, Vs

5 x 3 mm (calibrated)

$ 12.48

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0.24Ct Dark Violet Iolite, Baguette, Vs-Si

5 x 3 mm (calibrated)

$ 11.52

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0.27Ct Deep Purple Iolite, Emerald Cut, Vs

5 x 3 mm (calibrated)

$ 12.96

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0.27Ct Pinkish Violet Iolite, Baguette, Vs

5 x 3 mm (calibrated)

$ 12.96

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0.12Ct Dark Bluish Purple Iolite, Square, Vvs

3 x 3 mm (calibrated)

$ 5.76

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0.30Ct Deep Purple Iolite, Baguette, Vs

5 x 3 mm (calibrated)

$ 14.40

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0.28Ct Dark Blue Iolite, Pear Shape, Vs

4 x 4 mm (calibrated)

$ 13.44

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0.20Ctw Silverish Blue Iolite, Square, Vs

2.7 x 2.5 mm

$ 9.60

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0.27Ct Medium Light-Violet Iolite, Baguette, Si

5 x 3 mm (calibrated)

$ 12.96

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0.18Ctw Dark Bluish Purple Iolite, Square, Vs

2.6 x 2.6 mm

$ 8.64

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0.28Ct Deep Purple Iolite, Emerald Cut, Vs

5 x 3 mm (calibrated)

$ 13.44

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0.26Ct Deep Purple Iolite, Marquise, Vs

5.7 x 2.9 mm

$ 12.48

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0.26Ct Medium Violet Iolite, Emerald Cut, Vs-Si

5 x 3 mm (calibrated)

$ 12.48

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0.29Ct Deep Purple Iolite, Baguette, Vs-Si

5 x 3 mm (calibrated)

$ 13.92

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0.33Ct Deep Purple Iolite, Baguette, Vs

5 x 3 mm (calibrated)

$ 15.84

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0.32Ct Medium Light-Violet Iolite, Emerald Cut, Vs-Si

5 x 3 mm (calibrated)

$ 15.36

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0.21Ct Dark Bluish Purple Iolite, Square, Vvs

3.6 x 3.6 mm

$ 10.08

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0.26Ct Deep Purple Iolite, Emerald Cut, Vs

5 x 3 mm (calibrated)

$ 12.48

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0.27Ct Dark Violet Iolite, Emerald Cut, Vs-Si

5 x 3 mm (calibrated)

$ 12.96

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0.20Ctw Silverish Blue Iolite, Square, Vs

2.7 x 2.7 mm

$ 9.60

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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

The website has a good selection, the interface is very intuitive.

Posted By PhoenixFeatherJewelry in January, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Very good and simple exchange

Posted By Waylon in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

My experience has always been fantastic. Today I saved 6 gems to email a customer looking for a particular color blend to fit into an east west setting, so her options were limited, but we found one she wanted, deleted all the others in the cart and order the gem she selected. It was helpful to be able to put them in the cart so I could save them until she selected the one she wanted without having to research all of them again.

Posted By RJ in January, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

It was fine . Wish there had been more round stones to select from

Posted By Emm in January, 2026
Source: Bizrate

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 -> 10 star ratings

Very surprised how quick and efficient it was to checkout and pay. Also found exactly what I was looking for no issues.

Posted By Watson in May, 2025
Source: Bizrate
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