Convert from gamma to carat [UK]

Unit Definition (gamma)
The gamma is an informal metric unit of mass equal to 1 microgram (µg).

Unit Definition (carat [UK])
The carat [UK] is a unit of mass used for diamonds and other precious stones. In the U. S. and Britian, the diamond carat was formerly defined by law to be 3.2 troy grains, which is about 207 milligrams.