Birthstone Guide October 29, 2020 January: Garnet February: Amethyst March: Aquamarine April: Diamond or Clear Quartz May: Emerald June: Pearl July: Ruby August: Peridot September: Sapphire October: Opal & Pink Tourmaline November: Citrine & Golden Topaz December: Turquoise, Tanzanite, Zicron & Blue Topaz