These earrings are cut from a porphyry that comes from Auburn, CA. This is the good stuff! Also known colloquially as chinese writing rock. The phenocrysts (large while crystals) are probably a feldspar in a dark groundmass of more mafic (metal rich) minerals.
The stones are 22mm wide and 34mm long and hang 64mm total on hammered 14k gold fill wire. The earrings weigh 5 grams each.
All items are shipped USPS First Class Mail within the USA and USPS First Class International shipping for orders outside the USA.