A while back, we brought you our hands-on review of the Richard Mille RM052-01 Skull Tourbillon here. Today, we bring you a special iteration of this amazing timepiece encrusted with pink rubies, black sapphires and diamonds. The Richard Mille RM052-01 Skull Tourbillon Rubies, Black Sapphires and Diamonds is a Unique Piece that takes its inspiration from the previous model presented in 2013 and from its predecessor the RM052 released in 2012.