1. Online auction platform: Jewelry and luxury goods are usually sold on auction platforms such as Yi Bei and JD.COM in Paipai.com. You can create a sales account and publish Bulgari necklaces on these platforms.

2. Luxury trading platforms: Some specialized luxury trading platforms, such as TheRealReal, VestiaireCollective and Rebag, provide services for buying and selling second-hand luxury goods. You can register and upload details of Bulgari necklaces on these platforms.