Cubic Zirconia Studs What Is The Difference Between Crystals And Cubic Zirconia?

What is the difference between crystals and cubic zirconia? - cubic zirconia studs

I did not ask the difference between diamonds, but the difference between these two .. and zircon crystals? If it is exactly what the rings are formed by crystals? For me they are very simular, but what is better? Could you break? Any information would be a great help!