1. Certificate: Jewelry with Chow Tai Fook trademark will be accompanied by a certificate. The certificate usually contains detailed information such as Chow Tai Fook's trademark, product name and quality, 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, which can be used to identify whether it is Chow Tai Fook brand.

3. Material: Chow Tai Fook's jewelry usually uses high-quality materials, such as diamonds, gold and platinum. You can distinguish 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 checking the packaging box and accessories.