Description: Dolomite 30mm X 40mm Rectangle Beads 4pcs approxSize: 30mm X 40mmShape: RectangleMaterial: DolomitePackaging: Strand (approx 4 pcs)What Is Dolomite? Dolomite was named for the French mineralogist Deodat de Dolomieu. The mineral dolomite is commonly found in deposits of a sedimentary rock called dolostone.