The Ideal World rings are Moissanite . As far as man made goes they are much, much better than Diamonique. I have never bought Firelight Diamonds and never will so I can’t compare. Ideal World’s is considerably more expensive than diamonique but a different quality all together. I have 2 rings from Ideal World which I take on holiday with me because it saves me worrying about losing the real thing.
I believe the inspiration for Moissanite came from a meteor sample but what is sold now is definitely made in a laboratory.