Vintage Mexican Casa Luna Carved Stone NecklaceMexican Brass Copper and Stone Necklace Casa Luna Statement Piece! An outstanding large mixed metals pendant necklace with carved stone and beads! This sizable mixed metals piece is absolutely loaded with texture! It's a handmade piece which appears to be made of brass, copper, and a pink stone that might either be dyed onyx or possibly agate. The pendant appears to be a solid copper piece with applied brass and some kind of darkened patina. Applied