I like the background and shading of #21 a lot, but the RWG feels too corporate. Like an insurance company sponsoring a golf tournament. #22 is much closer, but still has the same problem. Care to give it another shot?maybe more like a sphere with the initials wrapped around it? And just a different, more elegant font.
Or another possibility: using a photo image of a diamond or ruby and then engraving the initials on it somehow? Or something else that connotes luxury?