Thanks for the info. I wish they had the chalcedony in store to compare, but I’m leaning toward the guilloche.I love myself WG guilloché ❤️. For the chalcedony I was hesitating to order it SO in YG. If you like matchy matchy then Mop would make the point. With the signature both WG guilloché and chalcedony will look good if once you want to stack. I think everything is beautiful anyway... Tell us what you decide at the end !