Armor made from the scales on the basilisk. It protects you from fossilization.
Items Needed For Synthesis
UPDATE: July 28, 2010: Edit
"Owners of Basilisk armor will no longer have the power of 5 Zoisite gems because of the disproportionate advantage that armor provided."
--The Leaf (Retrieved from http://www.puppetguardian.com/guardian/news)