Iridium Safebags

experts in dental jewellery techniqueRhodium In 1803 the British chemist William Hyde Wollaston discovered this element in the deposits remaining after processing platinum ore. The new element was named after the rose-pink colour of its compounds, derived from the Greek word rhódon (‘rose’). IridiumThe British Chemist Smithson Tennant discovered iridium along with osmium in London in 1804. Because of its coloured salts, he named the new element iridium after the Greek word iris (‘rainbow’).RutheniumThis element was discovered in 1844 by the Russo-German chemist and pharma-cist Karl Ernst Claus when he was reprocessing waste from platinum recovery. Claus named the element after the old name for Russia or Ukraine (‘Ruthenia’).For over 165 years, Heimerle + Meule, Germany’s oldest gold and silver refi nery, has stood for confi dence and quality in all matters of precious metals. In addition to gold, silver, platinum and palladium bars, the company now offers a true market innovation in the form of the precious metals rhodium, iridium and ruthenium in sealed safebags. This special investment opportunity comes with a buy-back guarantee at market prices. 09.12/0.1Precious Metal Heimerle + Meule GmbH Gold and Silver Re? neryDennigstraße 16 · D-75179 Pforzheim Tel. +49 7231 940-0 · Fax +49 7231 940-2199info@heimerle-meule.com www.heimerle-meule.comA member of the POSSEHL groupSafebagsPrecious Metal Precious Metal Available only from uswith buy-back guaranteeA special investment opportunity with a valuable historyAs a true market innovation, Heimerle + Meule offers the precious metals rhodium, iridium and ruthenium in sealed safebags with a buy-back guarantee at market prices.RhodiumRhodium is a metal with a bright silver appearance and is harder than gold, silver or platinum but not quite as hard as iridium. It can easily be stretched and hammered.Facts and figures• Density: 12.41 g/cm³• Melting point: 1964 °C• Boiling point: 3695 °C• Annual production: approx. 25 t• Countries of origin: South Africa, Russia, North and South America• Applications: catalytic converters, thermocouples, mirror coatings, jewelleryIridiumPure iridium is a metal with a bright silver appearance and is very hard and brittle. It is the element with the highest density and is heavier even than osmium and platinum. Its melting point is very high and its electrical conductivity and thermal conductivity are relatively good. At very low temperatures, iridium is a supercon-ductor.Facts and figures• Density: 22,65 g/cm³• Melting point: 2446 °C• Boiling point: 4428 °C• Annual production: approx. 6 t• Countries of origin: South Africa, Russia, North and South America, Tasmania, Borneo and Japan• Applications: sputter targets, spark plugs, jewellery, cruciblesRutheniumRuthenium is a metal with a bright silver to matt grey appearance and is very hard with a high melting point. Like all other platinum group metals, ruthenium is extremely inert and in the absence of atmospheric oxygen does not even react to acids. Facts and figures• Density: 12.37 g/cm³• Melting point: 2334 °C• Boiling point: 4150 °C• Annual production: approx. 25 t• Countries of origin: South Africa, Russia, North and South America• Applications: hard disks, electrical contacts, catalytic converters, additive for dental and industrial alloys Source: heraeus-edelmetallhandel.de; Heraeus Metallhandelsgesellschaft mbh, Hanau