... make as your inquiry. • Pearl Shape: round, oval, off-round, tear-drop, button, flat pearl, baroque pearl, keshi pearl, biwa pearl; flower ... A variety of methods are used to create imitation pearls from starting materials that include glass, plastic, and actual mollusc ... , coque de perle (from nautilus shells), mother-of-pearl pearl (from mother-of-pearl), and hinge pearl (from the hinge of bivalve ...