Riddle

A certain wizard resided in a city made from this gemstone.

Choose an answer

A.Ruby
B.Sapphire
C.Diamond
D.Emerald
Hint: It's a word with 7 letters, starting with "E".

Answer

Emerald

Why this is the answer

In "The Wizard of Oz," the Wizard resides in the Emerald City, a city famously built from emerald-green architecture.

This riddle is filed under Hard/Difficult Riddles and rated Easy.