Replacement crystal strands for Cristello and Cristella pendant fixture. Strass crystals receive the Strass Certificate as a symbol for the best crystal stone quality. Uni-plug design allows fixture to be mounted on any lighting system or ceiling canopy through the use of an appropriate adaptor, not included. Cable length can be field-cut or specified when ordering. Next to diamonds and other gemstones the Strass crystal is the most suitable material for light refraction. Strass crystal components are made of the finest lead crystal with aminimum of 30% lead oxide. Strass crystal is free of impurities such as striate cordsand bubbles and is therefore more lucid then air or water.