Marie Antoinette's pearl was part of a diamond-studded pendant, and it has important historical significance, which increased its value. But there are several other factors that determine the ...

Natural pearls are harder to find ... it has to be cut and polished. This is when the real value of the gem is determined. There's a huge demand for black opal, with lack of supply driving ...

on finding one pearl of great value, he went and sold all that he had and bought it.” The pearl merchant represents the believer who, after a lifetime of seeking and acquiring material wealth ...