Dendritic Prehnite Plain Heart Briolettes measure approximately 10x10mm to 12x12mm in size, have a vitreous luster, a symmetrical heart shape, a smooth polished surface, Prehnite beads show a transparent body of a light to medium yellowish Green hue with black dendritic internal characteristics, the gems seem to have an internal glow and the strand consists of approximately 43 gems of a larger than average size.