Zircon in Matrix Natural Piece Zircon is a mineral belonging to the group of nesosilicates . Its chemical name is zirconium silicate and it has a tetragonal crystal system and a hardness of 7.5. This natural example is from a deposit newly found in Madagascar. Zircon is rarely found in such sizes as it is a rare mineral. This natural piece has Zircon held in matrix, it measures approx. 6.4 cms x 3.9 cms x 2.2 cms. Check out my other item s! Be sure to add me to your favourites list !Please remember if you are making multiple purchases to request an invoice before you pay so I can reduce the postage/shipping costs for you.