Iolite faceted rondelles measure approximately 2.5-3mm in diameter, have a vitreous luster, good cut and polish, symmetrical rondelle shapes, fairly well matched for a moderately saturated hue on strand, the pleochroic gems have a violetish blue, grey and colorless hue depending on direction of view, and the transparent bodies have visible internal characteristics for a wonderfully rich strand of rondelles.