并列题名：Identification of amber Identification of amber 并列题名：Identification of jadeite 并列题名：Identification of nephrite 并列题名：Identification of turquoise 并列题名：Identification of patent abuse 并列题名：Opal identification & value 并列题名：Identification of the succulents 并列题名：Identification of colored stones 并列题名：Great book of amber