A test that uses a simple instrument to measure the thermal conductivity of a suspicious stone will also quickly and conclusively separate diamond from cubic zirconia. Tedious specific gravity tests are not necessary. Moreover, specific gravity measurements can only be made on unmounted stones, whereas visual observation and thermal conductivity testing can easily be performed on mounted stones.
另外還可用簡單的儀器測出它的導熱係數，或用繁複的特殊方法測定它的比重，來分辨彼此之不同。