Carat - weight of loose or certified diamonds
is measured in carats.
Dimensions of the loose or certified diamonds
should not be confused with carat weight. Why is it
unrelated? Because a stone could have varying depths
therefore some could appear bigger depending on the
cut.
The size of a loose or certified diamonds has the biggest
impact on its price. The metric carat, which equals
0.20 gram, is the standard unit of weight for loose
or certified diamonds and most other gems. If other
factors are equal, the more a stone weighs, the more
valuable it will be.
One this website you will see links to JamesAllen.com
where you can purchase diamonds safely from the USA. In
the UK and Europe the diamond market is very highly controlled
to inflate profit margins to grossly unreasonable levels.
In the USA the markets are freer and you, the customer,
can make seriously huge savings. The UK jewellers will
tell you the diamonds are of less quality. That is nonsense.
Diamonds are certified for quality, so don't be fooled!
Buying a diamond from the USA will give you a lot more
diamond carat for your money! And you know how important
size is... ;)
Here are several ways to express 1 carat:
1 ct.
200 milligrams
1/5 gram
100 points
4 grainer (not often used in retail environment)
Point to remember: Size and colour
are immediately apparent.