Size of Cracked Crystal discs 20mm, thickness about 9mm.
Cracked Rock Crystal is not, as the name suggests, frosted - the fine structure of the lines is created by brief heating. The fine crack structure can eventually recede through intensive wearing and the resulting skin contact, as the cracks are filled by skin fat and oil and become less visible. Careful cleaning with alcohol, however, brings out the structure again.
Cracked, crushed or icecrushed Rock Crystal or Crystal as well as Iris Crackled Quartz, Crackle Quartz are other names for Crushed Crystal.