Hello, Dijue Jewelry is a brand with good reputation in Chengdu. The lettering in the products you buy should be regular: factory logo (logo of the seller or manufacturer)+material (Pt)+ content (950). This is a sign of its correctness. If it is true as you said, it is because Tijue sells platinum products, but it is not produced by its factory, so the lettering L you see may be the logo of the manufacturer it bought, because there are many dealers in the platinum series endorsed by Zhang Ziyi. If it's fake, it shouldn't, but it shouldn't belong to their logo.