Topaz imperial Chemical: Al2SiO4(F,OH)2. Clades: Alumiumsilicates; Nesosilicates; Silicates; Lapidae. rom Related postsNolana peruvianaAugust 23, 2020Lagenaria sicerariaMarch 10, 2019Patricia HatherlyJuly 15, 2022 Previous postPeatNext postVerdelith