There are old time diamond merchants and jewelers who believe they can accurately tell diamond necklace size and quality with only a loupe, but we have found that they are often wildly off in their estimates.
diamond earrings is more commonly found in certain shapes; baguette, emerald, heart, marquise, oval, pear, princess, radiant, round and trillion.
The value of a princess cut diamond is determined by its grading under the 4 Cs, color, clarity, cut and carat weight.