Our Aragonite Star Cluster has repeated twinning which results in pseudo-hexagonal forms. HOLD ON…what’s “pseudo-hexagonal” you ask? No no, our Argonite is not fake or superficial. It’s also NOT to be confused with Phil Collins’ 1985 hit song, Sussudio. Pseudo-hexagonal refers to Aragonite’s crystal structure. The hexagonal shape is actually a result of intergrowth of 3 individual orthorhombic crystal structures that formed into a 6-sided crystal.