Historical resources from around the world have mentioned, time and again, how various gems possess characteristics that might be helpful to individuals born in a particular month. With such a rich history it;s no wonder that astrologers began making connections to the twelve signs of the Zodiac. After studying the characteristics specific to each coloured stone, they ascribed values that may be useful to people born under the corresponding star signs. This gemstone symbolism was recorded for the first time a few hundred years ago by jewellers in Germany and Poland. By 1912, famous jewellery brands had begun publicising birthstone, with the National Association of Jewellers confirming the definitive stones and colours together with their associated months, signs and symbolic quantities in 1952.