Beautiful Turquoise Octopus Necklace This Beautiful Turquoise Octopus Pendant comes on a Pretty 925 Silver 18" Italian Cable Chain. The Pendant has a Lovely 10mm x 6mm reconstituted Turquoise Cabochon set in a Pretty Silver Octopus Surround. It is 3 1/2cm long including its bale approx 1 1/2cm wide.