1990\'s de Grisogono One Of A Kind 18K White Gold Ring with Diamonds and Black Pearl

One of a kind, de Grisogono ring set in 18-karat white gold featuring 155  white diamonds (3.34-carat) and 27 black diamonds (0.49-carat) that are pave set and spiral down the band (14-gram). One pear-shaped South Sea black pearl (13mm). Circa 1990\'s. Stamped with \'750\' and serial number \'53006/03-001\'.