Diameter

Pearls are classified from millimeter to millimeter and measured by the shortest diameter, which generally ranges between 8 and 14mm.This is done by sorting them through sieves. Some pearls reach 16mm and very exceptionally 18mm.To date, the record diameter for a round pearl is 21mm, 24,6mm for a semi-round, 26,95mm for a baroque pearl (Exhibited in The Robert Wan Museum of The Pearl)