Pearl is a valuable gem obtained from ___ and is used in making ornaments.
Pearl is a valuable gem obtained from pearl oysters and is used in making ornaments.
Guanine, which is used for making artificial pearl is obtained from
Statements
Some gems are pearls.
All pearls are diamonds.
No diamond is stone.
Some stones are corals.
Conclusions
I.Some stones are gems.
II.Some corals are diamonds.
III.No stone is gem.