A COLLECTION OF PINUP GIRLS RELATING TO A SPECIFIC GEMSTONE. EACH MONTH HAS A BIRTHSTONE EG. APRIL IS DIAMOND. THE FOLOWING IS A LIST OF GEMSTONES FOR EACH MONTH: JAN- GARNET FEB- AMETHYST MAR- AQUAMARINE APRIL- DIAMOND MAY- EMERALD JUNE -PEARL JULY- RUBY AUG- PERIDOT SEPT- SAPPHIRE OCTOBER- OPAL NOVEMBER- CITRINE DECEMBER- BLUE TOPAZ THERE ARE ALTERNATIVE GEMS