Definition of COMMODITY RATE. : a common carrier rate distinguished from a class rate and applicable only to a specific commodity or group of related commodities carried between specific points or territories. ADVERTISEMENT. a common carrier rate distinguished from a class rate and applicable only to a specific commodity or group of related commodities carried between specific points or territories.
Cubic Zirconia. Cubic zirconia (CZ), a diamond simulant, is not only the oldest diamond substitute, but also the most popular. Composed of zirconium oxide (ZrO 2) the mineral is extremely rare in natural form. Discovered by German mineralogists in 1937, zirconium wasnât considered economically feasible.ubic zirconia possesses less brilliance (less sparkle), but has more fire (flashes of rainbow color.) CZ is also very hard, not quite as hard as a diamond, but like a diamond can scratch glass.
Rating Newest Oldest. Best Answer: Cubic zirconia is REAL. It's not diamond, it's cubic zirconia, an artificial stone that is just about as brilliant as diamond but much much cheaper. If you said it was diamond, that would be fake.But it's very nice on its own. In fact it's impossible for most people to tell them apart.ating Newest Oldest. Best Answer: Cubic zirconia is REAL. It's not diamond, it's cubic zirconia, an artificial stone that is just about as brilliant as diamond but much much cheaper. If you said it was diamond, that would be fake.