birthstones
 January -
Garnet
February - Amethyst
March - Aquamarine
April - Diamond
May - Emerald 
June - Pearl or Alexandrite |
 July -
Ruby August -
Peridot September -
Blue Sapphire 
October - Opal or Pink Tourmaline
November - Citrine
December - Blue Topaz |
other stones
Tanzanite
Iolite |
Fancy Sapphire
Tsavorite |