Most cynarina are translucent not opaque. They also have a repeating pattern, kinda like a jello mold does. Hope that helps. I do notice Marcio is in Brazil and you are in Scotland. Americans tend to get their corals primarily from the South Pacific. Species can and do vary around the world. So if Marcio is getting coral from off the Brazilian coast and John from the Red Sea, you might be getting different species than we normally see, on any given coral.