Natural, pure, nacreous mother of pearl, an iridescent gift from the ocean. The Laban Mother of Pearl, which is known as a protection stone and a stress-relieving stone, brings you the power of the sea. ABOUT PEN BARREL The materials of a MOP fountain pen are the true natural mother of pearl and resin lacquer. It is a harmonious and balanced pen as a tiny universe in hand. The MOP pens are slightly heavier than other pens, which set off the prudence and quietness of writing. CAP, CAP-TOP & CLIP CAP It is Mother of pearl shell and resin lacquer and adorned with a silver-coating clip and cap-top medallion. Cap band engraved Laban logo.