This is because the quality of diamonds in earrings can be vastly different. These countries are well known for fine fashions in general. Then perhaps you have a different idea of what fashions are more suitable for you than others.
Diamond Certificate
Explanation of Cut, Color and Clarity of This Diamond
Cut Quality Proportions of the premium cut diamonds are very close to ideal cut. Premium cut diamond may be close to the ideal cut proportions and look just identical. By all means such diamonds are considered well cut. In fact, many consumers cannot distinguish between the ideal cut diamond and the premium cut. Appearance of diamond is very subjective and cannot be fully evaluated just by their proportions along.
Color D color diamonds are absolutely colorless. D is the highest color grade. Natural diamonds of this color grade are extremely rare and expensive.
Clarity SI2 clarity diamonds are slightly included grade two. SI2 inclusions in diamonds are easily visible under 10x magnification. These inclusions may or may not be discernable to the naked eye depending on their location on the diamond, but these diamonds still presents an excellent value.