The Pelican Int’l Crystallite Series granite composite sinks are made with 85% pure quartz, the hardest constituent of granite coupled with a high grade acrylic binder. Manufactured exclusively in Germany, our Crystallite Series granite composite sinks are all made from long-life, environmentally sound materials. The PL-100, PL-175 and PL-200 can be used for either top mount or under mount installation. The PL-350 can be used for under mount installation only. All of the Crystallite Series granite composite sinks feature a natural antibacterial hygiene protection system that uses natural silver ions to reduce bacterial growth.