A super-rich specimen of wire silver on acanthite, from the recent finds in Morocco (this piece was mined in early 2006). Acanthite is of course silver sulfide, so what you have here is a LOT of silver. But most important are these thick mats of glittering silver wires, richly piled up on the underlying acanthite (which provided the silver that supplied the growth of the wires). This find caused quite a stir, as any new find of crystallized precious metal does.