Hi Maga, I know that frustration too,Just hang in there. 8 )~ Have you tried increasing the ambiance or reflection on the diamond material? Reflection may hopefully pick up some of your already existing lights. Without a pic attatched,I cant see your plant problem, did you try some of the techniques that were mentioned in your other thread? Underwater scenes are challenging,Just hang in there and play with it. also did you know about the Ray spray tool?or the plop render feature? they're great for doing little test renders so you dont have to render the whole scene again. Good luck Hawkfyr

“The fact that no one understands you…Doesn’t make you an artist.”