I'm looking to purchase a ruby and have come across one that is certified crimson red by Gubelin. I've gone on to the Gubelin website to read about this and crimson red is the same as their pigeons blood but without strong fluorescence. Does anyone know if the ruby needs to meet certain clarity requirements as well? It states that there are no eye visible inclusions, no dark inclusions and high level of transparency. Can I assume that if a ruby has been given crimson red that it's not going to be an overly silky/cloudy stone?