
The posts are 24kt gold plate. It's vermeil - which is gold plate over sterling silver applied electrochemically. Gold filled is better quality but for gold plate these weren't cheap. I think gold plate should weather well since they're not rubbing against skin. Hope so anyway. Gold filled, also known as gold rolled (which makes more sense), is more durable. Gold plate is a very thin coating of gold although 24K is a teensy bit heavier than 10 or 12K. Gold filled is not really gold filled, but gold over the outside of some other metal.
Honestly, they are prettier in real life! They individual beads in the body absolutely glitter in the light.