Swarovski crystals do not occur naturally. They are man made and consist of 32 percent lead, which is a requirement when making the crystals. The use of lead allows for a material that can withstand cutting and engraving. Daniel Swarovski invented the formula for the crystals in the 1890s.
Swarovski Crystal Facts- Things you must know before Dealing Since decades, Swarovski has been the major attraction among crystal beads and pearls lovers.