Mabe Pearl

(pronounced mah-bay) A cultured pearl usually of teardrop shape, flat on one side.
Found on http://www.indygem.com/pages/Glossary-of-Terms.html

mabe pearl

A cultured hemispherical bouton or blister pearl
Found on http://www.saffronart.com/sitepages/jewelry/glossary.aspx
No exact match found