January
Garnet (alternate is Rose Quartz)
April
Diamond (alternate is Rock Crystal (Quartz))
March
Aquamarine (alternate is Red Jasper (Bloodstone))
December
Blue Zircon (alternate is Turquoise, Lapis Lazuli or Tanzanite)
October
Opal (alternate is Pink Tourmaline)
May
Emerald (alternate is Chrysoprase)
August
Peridot (alternate is Aventurine, Sardonyx, or Sapphire)
June
Pearl (alternate is Alexandrite or Moonstone)
February
Amethyst (alternate is Onyx)
November
Yellow Topaz (alternate is Citrine or Turquoise)
July
Ruby (alternate is Jade or Carnelian)
September
Sapphire (alternate is Lapis Lazuli)