Article - 28 Apr 2004
The purity or fineness of silver and silver alloys is explained and common alloys provided.
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 - 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 - 26 Jul 2005
Using a high-tech but low-cost technique, a Johns Hopkins undergraduate has tested tiny samples of four metal alloys to find the best blend for use in platinum jewelry. The optimal blend and test...
Article - 26 Nov 2004
Anodising is a surface treatment used for titanium alloys. The benefits, process and applications are all described.
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 - 19 Mar 2004
Ever looked at buying a diamond and wondered what influenced its price. Unravel the mystery of the 4 C's, colour, cut, clarity and carat with AZoM's guide to diamonds. Find out about how colour...
Article - 9 Mar 2004
3D Systems Corp have developed a photoreactive epoxy resin for use in stereolithography. The new product is designed for use by jewellery manufacturers for making design models and patterns, including...
Article - 16 Aug 2003
Sapphires are well known gem stones. The stages in their processing, such as grading, heat treatment and marketing are discussed. Characteristics and colours are also mentioned.