Zokaji Tmall Flagship Store. Zokaji, the famous jewelry brand. The name Zocai originated from the famous Belgian jewelry designer Dirks ZOCAI, which was incorporated in 2004, specializing in diamond and jewelry e-commerce business. Zocai is a diamond wholesaler, jewelry processor, jewelry design studio and jewelry retailer, and has a deep penetration in the entire diamond and jewelry industry chain to maximize customer benefits.