This pendant has been made by sand casting a wax heart that I carved by hand. It's heavy and thick and weighs nearly 10 gramms. It'd beautifully smooth and shiny and tactile. The Size is approx 23 mm (including bail) x 18mm x 7 mm thick. 
The chain is a heavy large link sterling silver belcher chain. It's 20 inches long but you can wear at any length as it fastens onto itself. 
Hallmarked and special delivery included.