1) Corundom 2) Corundum 3) Magnesium mineral 4) Transparent gem 5) Triclinic mineral 
Sapphirine is a rare mineral, a silicate of magnesium and aluminium with the chemical formula (Mg,Al)8(Al,Si)6O20 (with iron as a major impurity). Named for its sapphire-like colour, sapphirine is primarily of interest to researchers and collectors: well-formed crystals are treasured and occasionally cut into gemstones. Sapphirine has also been sy...
• (n.) Resembling sapphire; made of sapphire; having the color, or any quality of sapphire.
Sap'phir·ine noun Resembling sapphire; made of sapphire; having the color, or any quality of sapphire. ' Sapphirine degree of hardness.' Boyle. 
[adj] - made of or resembling sapphire 2. [n] - a rare light blue or green mineral
sapphirine Of, relating to, or characteristic of a sapphire; especially the color.
adjective made of or resembling sapphire