Authentic Cartier Trinity Ring Yellow, Rose, White Gold Bands with Diamonds

My Cartier Trinity ring is 4 3/4” or size EU 49. The ring has one 18k yellow gold band, one 18k rose gold band, and one 18k white gold band. Each band has one diamond. The width of each band is 3.2mm. The rose gold band is inscribed with “les must de Cartier”. I am the second owner of this ring and it’s a bit small for me so that’s why I’m selling it. I’m asking what I paid for it which I think is an incredibly fair price. Thanks for looking!