Iolite jewelry displays the violet-blue depths that earned this stone its reputation as the Viking compass gem. Norse seafarers used thin iolite slices to locate the sun through overcast skies. Each piece in this collection features natural iolite mounted in .925 sterling silver. The stone shows pleochroism, shifting between blue, violet, and pale yellow depending on viewing angle. Iolite rates 7 to 7.5 on the Mohs scale, making it suitable for regular wear. Browse over 130,000 pieces with free shipping across the United States.
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Iolite is a variety of the mineral cordierite, formed in metamorphic rocks under high heat and pressure. Major deposits exist in India, Sri Lanka, Madagascar, Tanzania, and Brazil.
Iolite rates 7 to 7.5 on the Mohs hardness scale, comparable to quartz and tourmaline. This makes it suitable for rings, pendants, and earrings with normal care.
Iolite exhibits strong pleochroism, meaning its crystal structure absorbs light differently along three optical axes. This causes the stone to show blue, violet, and yellowish tones when viewed from different angles.