Corundum (meaning): Corundum belongs to the family of precious gems and comprises principally rubies and sapphires, including expensive and rare start sapphires. The most beautiful star sapphires, which have magnificent powers to bestow general happiness and divine favors, are of blue color.
Corundum is rare gem and has crystal lining in their atomic structure. When these are taken nearer to the light, these look like sparkling starts. Star sapphires should be used to render proper guidance and should be minimum 3 carats. The purer variety of corundum is colorless.