What are Rubies and Sapphires chemically known as
A. Silicon dioxide
B. Aluminium oxide
C. Lead tetra oxide
D. Boron nitride
Answers
Answer:
Aluminium oxide are chamically Rubies and Sapphires.
Answer:
B. Aluminum oxide.
Explanation:
Rubies and sapphires are chemically the same stone but over the years sapphires that have the impurities that cause them to be red have become known as rubies. Ranging in colour from a deep blood red to a light pink colour, the most celebrated source of these wonderful gemstones is the northern, Myawmar region of Burma. However, other areas in South East Asia, Tanzania and Kenya also mine rubies. In the 19th centuary they were considered more valuable than diamonds though this has now changed.
Ruby’s chemical composition is aluminium oxide which is also called corundum (this is the same as sapphires) but it is the presence of impurities such as chromium oxide and iron oxide which gives rubies their colour. Varying amounts and types of impuries will cause different shades and depths of colour.