Idocrase Plain Rondelles measure approximately 5mm to 7mm in diameter, these gemstones have a vitreous luster, beads have excellent polish on their symmetrical rondelle shape, these Idocrase beads are transparent with very minute internal characteristics, these Idocrase gems (also know as Vesuvinite) is extremely brilliant, and gems are a deeply saturated yellowish green hue for a World Class color Idocrase with superior make.