Lirael's Resplendent Tumult

A small jewelry box crafted from iridescent darkwood that seems to ripple like oil on water. The hinges are made of solidified mercury, and the lid is inset with a crystalline lens that shifts colors between violet, crimson, and gold. Though it feels light, the air around it thrums with an unpredictable, discordant vibration that causes nearby small objects to float briefly or change color.