The history of the birthstone varies, generally thought to have started with the 12 gemstones of Aaron’s breastplate. It appears that it has been decided that the Carbunkle stone may refer to Ruby or Garnet, and Sardius may refer to Carnelian, and Ligure refers to Zircon or Quartz crystal. Someone decided to modernize these gemstones,…
October birthstone, Opal
