OK.. I have tried about 5x for a diamond with firestorm and island. I heard something about you need all for basic gem colors. Yellow red. green. Blue.. I've also heard firestorm and island work. So far nothing. After awhile I have feed both dragons to epic level. Both now are epic. The first go I did.. Island on the left side, and firestorm on the right side... No go. Now first storm on the left and island on the right. Wish me luck. I'll let you know how it goes.. Also if anyone has any pointers I'd appreciate it. Thanks.