Does 'Golden Blessing' buy gold-filled jewelry?

'Golden Blessing' does not buy gold-filled jewelry for the same reason that it cannot buy gold-plated jewelry, since gold-filled jewelry is a type of gold-plated jewelry.
This type of jewelry is not made of a homogenous compound of metal and pure gold, but rather of a metal covered with gold. In order to calculate the value of the gold, it must be separated from the metal, which is something that is done only in a chemical process, such as refining.