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It's an ammonite fossil - the concretion forms around the ammonite and the concretions are usually found in clay or shaley rocks.

Up for auction back in 2010 was this "EXCEPTIONAL GEMSTONE AMMONITE: of the rarest gemstones in the world, formed from the nacreous shell linings of Cretaceous ammonites in only one small area of North America." This particular specimen is even more rare because of the "quantity and quality of these rare colors" and the fact that it "retains areas of excellent three-dimensionality and detail." 20 1/4 inches wide; estimate $40,000-45,000

Kali Gandaki GorgeNepal is the proud custodian of world’s deepest gorge- the famous Kali Gandaki Gorge. This gorge has tremendous influence on business and is being used for centuries as a trade route between Tibet and Nepal.

Different styles of puja in different communities