BERYL Be3Al2Si6O18 (hexagonal) . variety heliodor,yellowish translucent crystals. Minas Gerais, Brazil . 金綠柱石是指像陽光般金黃色的綠柱石∼GIFT of the SUN．玻璃光澤，透明到 半透明，硬度 7.5∼8，其透明無瑕者可作寶石．

經典名礦欣賞．２
NO.477