I Have a yellow white ladies circular style movable ring 14KT all set Fifty Four cut Diamonds i would like to auction i live in Canada could you advice me as to how and what step

They have a form you can fill online. Where you attach photos of the item and certifcate of authenticity (if you have it ) and someone will reach out to you with further information on auctioning.Also call them they will give you more information on that.

Christie's has information on'line on what you need to do about contacting them. Indeed, if your ring is special, then they'll want to talk to you. It sounds lovely.

Im not sure you would want to call the store.