human
How can I tell the difference between a real diamond and a cubic zirconia?
assistant
A real diamond is a hard, transparent mineral that is made up of carbon atoms. It has a characteristic yellow color due to impurities in its crystal structure. Cubic zirconia is an artificial gemstone that is composed of zirconium dioxide and aluminum oxide. It is usually a clear or tinted white stone with a hardness similar to diamonds. The two stones are often confused because they have similar physical properties. However, cubic zirconia tends to be more brittle than a natural diamond, so it will break more easily when dropped.