How many times have you looked at a piece of your
jewelry and wondered just how it was made. Is the meat carved? How is
it created with such fine detail? The methods that are used to create
the fine jewelry that you wear use the same technology that lifted
civilization from the Iron Age to the Bronze Age.
In fact, many
anthropologists theorize that ancient people stumbled onto the idea
when molten copper melted out of chunks of copper ore that they had
lined their fire pits with. Its called the "lost wax" casting method
and its the same method that ancient peoples developed to make copper
and bronze axes and tools with.
To create a piece of jewelry
using the lost wax method, the piece is first crated in exact detail
out of sculpting wax. The wax piece is then encased in plaster and
allowed to cure and dry. After the chunk of plaster has been allowed to
dry it is then placed in a hot kiln so the wax piece inside of it can
melt and burn out.
When it has cooled, the chunk of plaster with
the hollow shape of the original wax piece in it is placed in a
centrifugal jewelery casting device. The centrifugal caster then spins
around and molten gold or silver is forced into the hollow spot in the
chunk of plaster by centrifugal force.
After the the metal inside
of the plaster has been allowed to cool, the plaster is then chipped
away. What is revealed is a whatever was originally encased inside the
plaster made of wax, only now it is made out of metal. Even things such
as bugs and leaves can be encased in plaster and then reproduced in
gold this way as long as they can be burned out in a kiln.