Not to distract from the Cartier topic, but have you checked out Hermes scarves? They make particularly beautiful ones.
And this is a great time to wear your favorite earrings to draw the eye there!
Feel better soon from your surgery! A friend of mine had surgery that involved a scar there, but the incision was placed by the surgeon in an area where her neck naturally creased a bit, and it became less noticeable faster than she or I had originally expected. A couple years later, no one ever notices that it had happened. I hope your healing is pretty straightforward and that it can become subtle with the passage of time!
Most importantly, sending good vibes for healing.