I've been interested in working with PMC for a while now, but haven't had the time (oh for endless holidays!). Knighttimedesigns uses PMC to create leaf pendants, to great effect:
These are made by placing real leaves in the PMC and firing it so that the leaf burns away, leaving the imprint in the clay. Knighttimedesigns creates other types of jewellery as well.
She lives in Killarney, Ireland and has been making jewellery for 12 years now. Lovely items in her shop.