Hey, would really appreciate any and all help! Time sensitive! I bought a Cartier love ring with diamonds and it arrived today. Didn’t come with a certificate but came with the invoice. How likely is the invoice to be faked, because this is a printed copy they sent. I also have never seen this specific format of the inside Cartier serial number where the serial number is on the top and the 750 and size are on the bottom, except for in one google image search. It’s definitely engraved and the weight is about what it should be. The diamonds also look real and are very well paved. It was a graduation gift so please help me!!! It is so, so appreciated.