Leslieray, yours to do yet! x Sedeveria 'Blue Giant' certainly shows a good likeness ..
http://www.sedumphotos.net/v/s...
On the Crassulaceae site Blue Giant is under XGraptosedum. The flowers can have 6 petals and from what I can see there can be some reddish colouring on the petals. I think this is somewhere close, if not the one.
http://www.sedumphotos.net/v/s...
http://crassulaceae.net/xgrapt...
You're welcome Cliftoncat. The terrier strikes again.