'Lapis-Lazuli' is a blue **** precious stone. It is mineral of the class –
(A) Sodium alumino silicate
(B) Zinc-cobaltate
(C) Basic copper carbonate
(D) Prussian blue
Correct option (A) Sodium alumino silicate
Explanation:
'Lapis Lazuli' is the aluminium silicate present in the earth rocks as blue stone.
