World Record Title: The most expensive metal in the world is californium.
World Record Creator: Californium
World Record Holder: Californium
World Record Field: Metal
World Record Rules: 1. The world's most expensive metal
World Record Number: 20121200007
World Record Validity Period: Until the world record was broken.
World Record Witness: Carrying the Flag World Records certifier 006 and 009
World Records Source: World record database of Carrying the Flag
Awarding Certificate Date: December 16, 2012
World Record Details:

          The most expensive metal in the world is californium. 1 grams's worth about 1 million -200 million.
         Californium, atomic number 98, it is an artificial radioactive elements, named due to commemorate the discovery of California. In 1950, U.S. scientists Thompson, and streeter at University of California with accelerated alpha particle bombardment curium 242 found in california 245.