1. Certificate: Jewelry with Chow Tai Fook trademark will be accompanied by a certificate. The certificate usually contains the trademark, product name, quality and other detailed information of Chow Tai Fook, which can be verified by querying the certificate number or scanning the QR code.

2, trademark logo: Chow Tai Fook trademark jewelry will have a trademark logo, you can identify whether it is Chow Tai Fook brand through the trademark logo.

3. Material: Chow Tai Fook's jewelry usually uses high-quality materials, such as diamonds, gold and platinum. You can tell the authenticity of jewelry by checking its material and texture.

4. Packaging: Chow Tai Fook's jewelry usually has exquisite packaging boxes and accessories, and the packaging box will also have Chow Tai Fook's trademark and related information. You can judge its authenticity by looking at the box and accessories.