Polymer clay is totally synthetic and becomes tough and stiff after being cured in an oven. No microwave please unless specified. All Polymer clay packets come with instructions on curing or baking temperature required.
After surfing the net for more information I came across this amazing fact that Polymer Clay was originally made as a clay for kids .Even today its sold in toy sections of major stores. Now its being extensively used in jewellery making , nail art, and charms.
Polymer Clay is difficult to find in local stores in India, though its available in Malls and large craft stores or online and its quite expensive!