This slab of Graveyard Point Plume Agate has some beautiful plumes. The are in whites, pinks, and browns against a translucent quartz background.  This is old stock form the 1980's.

It is about 6 mm thick.

Photographed wet to show details and dry to show the slab dimensions(second photo).  The dry photo is on a 10mm or 1cm to the square scale.