Patiala ruby choker, Cartier. The Al Thani Collection Published 09.12.2015 in Bejewelled treasures: Al-Thani Collection Previous Next The Patiala Ruby Choker set with rubies, diamonds and pearls with platinum mounts. Cartier, circa 1931, Restored and restrung to the original design by Cartier Tradition, Geneva, 2012. The Al-Thani Collection