What's the kind of the jewelry is more beautiful?
The one you enjoy the most. It should always matter to you. For example: I love vintage, pewter jewelry while almost all of my friends hate it; well "haters gonna hate" I still wear it anyways.
It depends on the person, but I prefer earings and rings.
a 3 carat marquise shaped diamond ring
All depends on the person. Like me personally i like the simple understated jewelry.