An unusual natural pearl and diamond pendant, early 20th century, designed as a natural baroque

An unusual natural pearl and diamond pendant, early 20th century, designed as a natural baroque pearl accented with rose-cut diamonds, to a pendant cap set with smaller rose-cut diamonds, length 3.9cm including bail

A verbal report from GCS states that the pearl is natural saltwater, the interior hollow, with evidence of chemical treatment to the surface to improve the colour