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.
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 -> 8
I visited several online loose stone shops trying to find rare stones. I finally found one that I've been looking for here, and very satisfied. Looking forward to receive the item in 3 weeks.
Posted By Atsu in December, 2025
Source: Bizrate
Overall Rating -> 9
Very easy to navigate with a great selection.
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Overall Rating -> 10
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 -> 10
I loved it! Extensive inventory, great prices, I definitely will be buying from here again!
