Jewelry Testing Center of China Federation of Industry and Commerce is an appraisal institution with national jewelry testing qualification. The jade certificate tested is recognized by the state, and there is no problem. Everything is authentic. Please feel free to wear it. This certificate is legal and valid.
This ruby kit is natural, but the size of ruby is not large, and it is reasonable to start with the overall size not exceeding 1000.
I hope you didn't buy anything expensive.