Unloading jewelry

I have a couple of pieces of nice jewelry that was given to me by my mother to sell. A necklace that was bought for $3400 and a matching set of opal necklace and earrings that should also be pretty valuable. I realized that this is above the type of jewelry that one sees in pawn shops. Does anyone know what sort of place I could sell these at, hopefully for a decent price? I live in Everett, Washington if anyone knows of a specific place. Any advice would be greatly welcome.