ゾイサイトMeanings1nounzoisiteA calcium aluminium hydroxy sorosilicate mineral, often used as a gemstone or collector's mineral. The term is a loanword from English.ゾイサイトは緑みどり色いろの結けっ晶しょうが美うつくしい鉱こう物ぶつです。Zoisite is a mineral with beautiful green crystals.