Pearls of wisdom...
Lustre measures the rate of reflection (how crisp and detailed it is) on a pearl’s surface, and the amount of light reflected on the pearls.
Generally the more perfectly round a pearl is, the rarer and more valuable it is.
While many prefer the classic white pearl, pearls come in a variety of colours ranging from pink to black.
In Ancient Greece, pearls were believed to be created by the tears of Aphrodite, the Grecian equivalent of Venus, and that wearing pearls on the wedding day would stop a bride from shedding tears...