Matlins, Antoinette. Jewelry and gems : The buying guide / How to by diamonds, Pearls, Precious and other popular gems with confidence and knowledge. Antoinette Matlins ; A.C. Bonanno. - New York : Gemstone press, 1987. - 206 p. : ill. ; text ; 25 cm. - 739.2+671.1 . ISBN: 0943763010 Subjects--Topical Terms: Ակնագործություն Universal Decimal Class. No.: 739.2+671.1