My wedding and engagement rings, Skagen watch, and earrings. I am not a big jewelry person...except for the wedding/engagement rings. They can stand on their own.
wedding/engagement rings
diamond studs
diamond/white gold Roberto Coin pendant in the shape of a baby girl that dh got me after I delivered our dd.
either my Cartier Tank or Chopard Happy Sport watch.
All Tiffany platinum and diamonds - Elsa Peretti earrings (I rotate between the Kashi pearls and her signature bevel-set diamond studs depending on what I'm doing that day), platinum-and-diamonds cross, and classic Tiffany setting diamond engagement ring.