This collection is dedicated to birthstone jewelry. Discover birthstone rings, bracelets, earrings, and necklaces. Discover a collection of fine jewelry sure to incorporate your birthstone in a high fashion design. Shop Oster Jewelers by your birthday month: January Garnet, February Amethyst, March Aquamarine, April Diamonds, May Emerald, June Pearl, Moonstone, and Alexandrite, July Ruby, August Peridot, September Sapphire, October Opal and Tourmaline, November Citrine or Topaz, December Turquoise. More birthstone collections coming soon.