Iridescent chalcopyrite, 2.5–3" piece Quartz These arches are made by

These arches are made by drilling a hole through a chunk of sandstone and sandblasting the material into a smoothed arch

but that doesn't seem to apply here where the square is distorted like a bad acid trip

This creates a colorless-to-white growth over the orange chalcedony

but use caution placing pressure on that section as it is liable to pop off

and has a slight glitter like sand

Iridescent chalcopyrite, 2.5–3" piece Quartz These arches are made byLocality: Mexico Approx size: 2. 53" Approx weight: 75275g, avg 200g **Altered material Iridescent chalcopyrite is frequently sold as "peacock ore" due to its jewel tone mix of blue, green, purple, and gold. If pyrite is fool's gold, then this variety of chalcopyrite is fool's bornite: it borrows its trade name from the closely related mineral bornite, the original peacock ore. The same process causes vibrant iridescence in both minerals by tarnishing