I have had gold rings in the past that eventually changed shape...became not a true round, but a bit more conformed to my finger. Do platinum rings do this? If yes, how long should it take?
Most platinum alloys bend more easily than most gold alloys
a rough non bending scale:
toughest
nickel white golds
18k rose
14kyellow
18k yellow
low K yellow and rose
palldaium white golds used for setting stones
platinum
silver
22k
24k