what is 999.000&99.90? in terms of gold measurement

in gold differance between 999TM &99.90? ANSWER TO THE ABOVE QUESTION gold is measured for purity in Carat and millesimal fineness 24 carat is 99.9% pure pure same 24 carat gole is 999 millesimal fineness pure they are just 2 different ways of measuring gold purity. TM means Trademark... the below link also may help: http://en.wikipedia.org/wiki/Carat_(purity)