3. Mine (N)- pit or excavation in the earth from which mineral
substances are taken.
Precious (Adj)- great value or high price.
Priceless (Adj)- so precious that its value cannot be determined.
Gold bar (N)- a bar(piece) of gold. It cant wear.
Fineness (N) pure.
Ounce (N)- a unit of weight. Call (OZ).
Karat (N)- a unit of fineness for gold. Call (K).
Reserve (V)- to keep.
Invest (V)- to commit (money) in order to earn a financial return.