About Us GMA Garnet (Europe) GmbH is the European market leader of abrasives. Based in Hamburg, with branch offices and dedicated distribution partners in most European Countries, we have been selling the high efficiency natural mineral abrasive for water jet cutting and sandblasting purposes, GMA Garnet Since 1991 to users in Europe. Since 1999 we are selling consumables and spare parts for the marketable water jet cutting Machines. The processing until packing and transportation are cer