I like another reviewer, only purchased this because of a lightning deal.  I got the blue/purple/green swirly color (which is listed as the 'grey') as opposed to the red.  I think Abalone is beautiful, and this pendant looked like a winner.  It is very light, which is nice, since it won't weigh down the wearer.  From the front it is lovely, though mine has a small hole that looks like it might have formed naturally in the shell? I've added a picture to show it--not that noticeable.

But from the side--the pendant is strange.  Up close you can see how thin the abalone is, with some kind of clear plastic behind it (and most of the time the plastic is thicker than the shell layer).  If there had been a picture posted of the pendant from the side, I am unsure if I would have purchased it.  I've added a picture (only viewable under 'customer images' if you choose the color 'grey' apparently) to demonstrate the layers.