History
The exact origins of lost wax casting are shrouded in mystery and it is possible that the technique was developed independently in different regions, but archaeological records suggest that the method was first used at some point in the fourth millennium BC.
The oldest known examples of this technique are approximately 6,500 years old (4550–4450 BC) and attributed to gold artefacts.
Facts
Sterling silver, a 92.5% silver alloy, melts at approximately 893°C (1640°F)
Various metals, including gold, silver, bronze, brass, copper, and aluminum, can be used in lost wax casting