Platinum
Platinum is a member of the platinum group of elements and group 10 of the periodic table of elements. It has six naturally occurring isotopes. It is one of the rarer elements in Earth's crust, with an average abundance of approximately 5 μg/kg. It occurs in some nickel and copper ores along with some native deposits, mostly in South Africa, which accounts for 80% of the world production. Because of its scarcity in Earth's crust, only a few hundred tonnes are produced annually, and given its important uses, it is highly valuable and is a major precious metal commodity.
Ricardo Basta
Basta has also become recognized in his field as a platinum expert. In the mid-80s, when information was scarce on the subject, he began to cast in platinum. Most design houses weren’t using platinum quite yet. Through the process of trial and error, he developed an understanding of the best way to work with the precious metal. Since then, the learning curve has decreased due to the popularity of the metal and the development of resources, equipment and technology. Also, due to his experience with platinum, he has written contributing articles for the Platinum Guild International on the subjects of casting and antique jewelry restoration.