January: Garnet - Often red, but can come in various colors.
February: Amethyst - Purple.
March: Aquamarine - Light blue or blue-green.
April: Diamond - Colorless, but can be various colors as well.
May: Emerald - Green.
June: Pearl - Typically white or cream, but can be various colors.
June: Alexandrite - Color-changing, often green or purplish-red.
July: Ruby - Red.
August: Peridot - Green.
September: Sapphire - Blue, but can come in other colors except red (which is classified as a ruby).
October: Opal - Often multicolored with iridescence, but can be other colors as well.
October: Tourmaline - Available in a wide range of colors.
November: Topaz - Typically yellow, but can be other colors.
November: Citrine - Yellow to brownish-orange.
December: Turquoise - Blue or bluish-green.