Red, Silver, Gold and Platinum levels. Hallmarks for gold, palladium, platinum and silver from Poland. Commonly used metals include gold, nickel, aluminium, copper, chromium, titanium, tungsten, platinum, and silver. Gabbro often contains valuable amounts of chromium, nickel, cobalt, gold, silver, platinum, and copper sulfides. It also possesses significant amounts of nickel, gold, silver, platinum, and emeralds. The circuit boards contain such precious metals as gold, silver, platinum, etc. The album was eventually certified platinum and gold in Mexico. Jack Johnson has received a number of gold and platinum certifications. Gold might receive additional certifications for achieving Platinum and Multi-Platinum levels. Gold in Belgium, Platinum in the Netherlands, and Gold in Switzerland. It was eventually certified platinum and gold in the UK and US respectively. Palladium is much less dense than platinum. This technique is particularly versatile at producing nanowires of gold, lead, platinum, and silver. After their series of platinum and gold albums, this was considered a flop.