Turkey produces many many different kinds of specimens alongside thundereggs. Here is a gallery of some of the most extraordinary examples of plume and moss that I have seen from here.
Small Specimen of Plume Agate from Almus Area
Intricate Sagenite Agate with Plume
Dense Moss Agate with Sagenite Needles
Dense Chunk of Plume Agate
Feathery Plume Agate Mass from the Almus Dam Bed, Tokat, Turkey