16 inch, total length of Bulgari Zhao Lusi tourmaline necklace 16 inch. The tourmaline necklace worn by Bulgari Zhao is a ruby tourmaline. Yes. Tourmaline necklace with platinum chain and ruby is worth more than 2.7 million. It is a high-grade necklace with a total length of 16 inch. It belongs to the same set as the ring on your hand.