The clay is fired and then glazed twice to provide extra protection and stability.
Other Zelda Themed Stuff:
Health Bar Hair Clip: http://www.etsy.com/listing/61323658/almost-full-health-bar-hair-clip
Tiny Blue Fairy Earrings: http://www.etsy.com/listing/59159234/tiny-blue-fairy-earrings
Navi Magnet: http://www.etsy.com/listing/59809003/legend-of-zelda-fariy-magnet
***I do all kinds of custom work. Convo me for more details***
Check out my other work in my shop: http://www.etsy.com/shop/WTFcharm