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Iolite Information

THE Alternate BIRTHSTONE for SEPTEMBER

Refractive Index : 1.542-1.551 (+.045,-.011)

Specific Gravity : 2.61 (+/-.05)

    Iolite is also called Dichroite, referring to it's strong pleochroism, and Cordierite by minerologists, but the term Water Sapphire is a misnomer. Iolite varies from violetish Blue through slightly voiletish Blue, and it always has a strong pleochroism.
    Iolite Gems are usually just a few carats in size, so to find anything over 3 carats in a rare find indeed. Iolite is cut to maximize the color and pleochroism. Iolite is often confused with Sapphire and Tanzanite. These vitreous, transparent, faceted stones are found in Sri Lanka, Brazil, India, Tanzania, Burma, Finland, Madagascar, Nambia, and Norway. The most common cut to be found is in Oval or Rectangular cuts.
    Iolite is heat sensitive, the stone fuses easily before a jewelers torch, abrupt temperature changes could cause fracturing. Chemicals that could attack this gem are acids.

TREATMENTS - Typically Iolite is not treated.
CARE - Iolite jewelry should not be cleaned in an ultrasonic or steam cleaner. We recommend Ionic Cleaners and/or warm, soapy water and a soft brush as the best way to clean Iolite jewelry.