Mystery Moss Agate Slab - Black Moss Beauty geode crystal formation and in another area magnetite

and in another area magnetite that flows in multiple directions)

This California classic should make some really neat cabochons and take a great polish showcasing the natural flowing patterns

It is often a white

but the breccia offers substantial variety with unique patterns

it is a pretty unique color scheme

Mystery Moss Agate Slab - Black Moss Beauty geode crystal formation and in another area magnetiteMystery Moss Agate Slab Black Moss Beauty Pre 1940s Old Stock This pre 1940s old stock slab of Mystery Moss Agate came from a collection that was entirely collected and worked prior to the 1940s. The exact origin is unknown, but this black moss agate is truly a beauty. It is polished on one side and had a small white square of foam likely padding on one side from long term storage. This is a neat piece of rockhounding history, and the stone is so old