Blue Goldstone is not actually a stone or gold. It is manmade stone that is glass with copper flecks and cobalt manganese.
The earliest written reference to the material we call goldstone is Vincenzo Miotti who was exclusively granted license by the Venetian head of state to manufacture Goldstone.
Blue Goldstone heart pendant measures 1 inch long from the top of the bail, just slightly under 1 inch wide by 1/2 inch thick. The bail is stainless steel.