birthstone Month Star Sign Traditional Gemstone Alternative Gemstone January Capricorn Garnet Rose Quartz February Aquarius Amethyst Amber March Pisces Aquamarine Jade April Aries Diamond Clear Quartz / Rock Crystal May Taurus Emerald Chrysoprase June Gemini Pearl Moonstone July Cancer Ruby Carnelian August Leo Peridot Spinel September Virgo Sapphire (blue) Lapis Lazuli October Libra Opal Pink […]