Contribute an edit
Submissions are moderated and will not appear immediately.
Text
Photo
Garnet is a group of related stones, the most popular of which is a deep red. Until the chemical composition was known, red semiprecious gemstones were called carbuncles.
Garnets have a particular chemical formula of two metals, usually calcium, magnesium or iron and aluminium, iron or chromium bound to silicon oxide - the general forumula is X3Y2(SiO4)3.
Garnets have a particular chemical formula of two metals, usually calcium, magnesium or iron and aluminium, iron or chromium bound to silicon oxide - the general forumula is X3Y2(SiO4)3.