Article - 15 May 2003
Recent developments and trends in the world gold market are reported. Of particular interest are developments in China. Posted May 2003
Article - 5 May 2003
Atomic, electrical, mechanical, physical and thermal properties of gold are provided. Some chemical properties are also provided, while some applications are mentioned.
Article - 20 May 2002
Powder metallurgy provides a fast an economical alternative method to traditonal techniques for production of rings. This article describes the patented process used by Engelhard for producing wedding...
Article - 21 Jul 2001
Silver metal in its pure state has a brilliant white metallic lustre and it is a little harder than gold and is very ductile and malleable. It has 3 commercial types and applications in jewellery,...
Article - 26 Mar 2004
The purity of gold is expressed in carats or fineness. These two measures of purity are explained and compared. Purity quality marks are also explained.Why gold alloys are used for jewellery is also...
Article - 20 Jul 2001
Gold is most widely known as a precious metal due to its high lustre and chemical inertness. It is also used for coinage, ornaments, jewellery, gilding, textile industry, radiation control,...
Article - 24 Apr 2008
This paper describes a technique that utilizes a microspectrophotometer to quantify the color of gemstone with greater accuracy and precision than the human eye or a standard spectrophotometer. It...
Article - 23 Apr 2007
Carbolite manufactures a range of high-quality laboratory and industrial furnaces including crucible furnaces for the precious metals market.
Article - 30 Jun 2006
Ruthenium is a hard silvery white metal at room temperature. It is a member of the platinum group metals. The discovery, occurrence, properties and applications of ruthenium are outlined.
Article - 6 Sep 2004
The effects of anodising of titanium alloys are briefly outlined. Acid and alkaline anodising processes arealso compared and the effect of oxide film thickness on colour is described.