I was born on 18.04.1976 and today i met an astrologer *** gemstone seller who claims my lucky stone is Blue Topaz. All these while i was informed that my lucky stone is Coral. I'm a bit confused now. anyone out there with good knowledge about gemstones could advise me. I'm planning to purchase a gemstone but I don't want to get cheated. Any good advise would be much appreciated.