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Results 71 - 80 of 352 for Jewellery
  • Article - 6 Jun 2002
    Gutta percha is a form of natural rubber introduced to the west in 1843. It was used for wire insulation for submarine telephone cales, golf balls and jewellery making. It has few uses today except in...
  • Article - 28 Mar 2002
    In 1803, Wollaston discovered the palladium metal. It occurs along with other metals belonging to the platinum group in Placer deposits in Australia, Russia, Ethiopia, North America, and South...
  • Article - 11 Feb 2002
    Platinum, with its unique physical and chemical properties, is used in a wide variety of industrial and environmental applications. It is also regarded as one of the finest, among all jewelry metals.
  • Article - 23 Jul 2001
    Platinum (Pt) was discovered by Ulloa in 1735 and Wood in 1741. Platinum occurs as such naturally, together with negligible amounts of palladium, iridium, rhodium, osmium, and ruthenium.
  • Article - 19 Mar 2003
    A concise report on the state of play of the gold market relating to industrial applications. Current and future devlopments for the elcteronics biomaterials/dental, pharamaceuticals and catalyst...
  • Article - 15 Oct 2002
    Iridium competes for the title of the densest material known to man. It is hard and brittle and is also one of the most corrosion resistant metals known. Its occurrence, properties and applications...
  • Article - 3 Apr 2002
    While platinum is best known as a precious metal and use in jewellery and as an investment, it has several other key uses. Some of these include catalysts for automotive and chemical applications,...
  • Article - 23 Jan 2002
    With a history much shorter than that of gold, its use and discovery in the 1700's is described. Development of the platinum market through the 1800's and into more modern times is also covered....
  • Article - 7 Feb 2003
    In 1790, Strontium (Sr) was discovered by Adair Crawford. However, only in 1808, the element was isolated through electrolysis by Davy.
  • Article - 27 Jun 2002
    X-Ray fluorescence is probably best known for compositonal analysis. However, it can also be used as a form of non-destructive testing for measuring coating thickness. The basic system, technique and...