Intermediate Grades And Pearl Grading For Strands
Some reputable sellers may also use intermediate grades for the pearls - those pearls that do not fall in a category but are between two - such as A+ and AA+. Obviously, these grading categories are quite broad and leave room for interpretation and individual judgment. Also note that in multi-pearl pieces such as strands, necklaces, bracelets, etc., every one of the individual pearls may not absolutely meet the indicated grade level. For example, a strand referred to as "AAA" must have most of its pearls as AAA pearls. However, a few pearls could have slightly lower lustre or a tiny bit more surface defects. This is because matching is also a primary consideration in multi-pearl jewellery, sometimes even overriding a very strict grading of each individual pearl.
For more information on pearl grading please visit:-
http://www.pearl-guide.com/pearl-grading.shtml
