Ji Tai jewelry is a real jewelry brand, but judging whether a jewelry brand is real or not needs more information. Here are some ways to judge whether a jewelry brand is real:

1. Check official website: If Ji Tai Jewelry has official website, you can check the company's contact information, address, telephone number and other information on the website to confirm its authenticity.

2. Inquiring about trademark information: You can inquire about the trademark information of Ji Tai Jewelry on the website of the Trademark Office to confirm whether it is a genuine brand.

3. Check the consumer comments: You can search the comments of Ji Tai Jewelry through the Internet to find out what other consumers think of its authenticity.

In a word, to judge the authenticity of a jewelry brand, we need to synthesize a variety of information to judge. It is recommended to choose a well-known brand or a brand with good reputation when buying jewelry.