big machines i guess
A lubricant. In machines, some kind of oil is often used.A lubricant. In machines, some kind of oil is often used.A lubricant. In machines, some kind of oil is often used.A lubricant. In machines, some kind of oil is often used.
There are a great many applications for alloys apart from jewelry. As an example - bronze and brass are alloys that are used to make parts for many machines. Stainless steel is an alloy that seems to be ubiquitous.
copper is used as base metal in gold jewelry
Some of the machines that are used to make purses include sewing machines and presses. Purses are sometimes hand-sewn as well.
AC
Yes...
yes
Yes.
a hammer
Yes, some gem stones are made to make jewelry. but not all.
Topaz is used to make jewelry mainly!
I believe it would have been cast iron, but that is only my guess.