The size of a diamond has the biggest impact on its price. The metric carat, which equals 0.20 gram, is the standard unit of weight for diamonds and most other gems. If other factors are equal, the more a stone weighs, the more valuable it will be. Gemological laboratories measure carat weight when the diamond is loose (unmounted). While it is possible to estimate the weight of a mounted diamond, the lab uses ultrasensitive scales to achieve an exact weight, measured 3 decimal places, although the third decimal place is not usually mentioned at the retail level.

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)

Prices of diamonds are expressed in the trade as a price per carat. When we say that the Carat Weight has the biggest impact on the price of a diamond, not only is that true for the overall price of the stone, it is also true for the unit price per carat. That’s why a 2 carat diamond is more than double the price of a 1 carat diamond.
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What do you look for when you go out to buy Jewelery? Or you just
prefer buying what is in vogue? People have different ways to decide
upon jewelery, and I am going to show you a few of them.

The first thing that jumps out at you from the piece of the jewelery
is its beauty. The seductive spell that it casts on you forces the
strongest of the lot to buy it without a second thought. What follows
is the quality of the ornament. It might be beautiful but its not
necessary that it has the quality to retain the beauty over its
lifetime.

Last, but not the least, your choice of jewelery should suit your
style and persona. Don’t blindly follow the trend, make your own style
statement. After all, there are only a few people who bring about the
trend.