is weighed in troy ounces.
is a world price of gold that is set each day in
for each oz.
price is set in the morning; a second price is set in
is called the London Gold Fix.
Gold is also weighed in a measurement
called pennyweights (abbreviation
are 20 dwts per troy ounce.
can be weighed in grams…there are 31 grams in a troy
dwt= 1.55 grms
1 dwt= 1/20th oz
Pure gold is 24kt.
Since this is typically too soft to make jewelry
that is strong enough to wear, the pure gold is mixed
with other metals to create a stronger metal.
The variations of the metals used are…copper,
brass, or nickel. The
amount of the metal used will give the gold a variation
to it’s color.
% of gold in a piece of jewelry is relative to 24kt
parts pure gold and 10 parts of alloy =24
parts pure gold and 6 parts of alloy = 24
a piece of jewelry that is gold must be marked as gold
with a plate or a stamp.
It can read 10k, 10kt, 14k, 14kt, 18k, 18kt.
they are not mandated to use a stamping but typically
they will use 750 for 18kt gold