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platinum the element
BUYZ Bargainz at Bidz Jewelry auctionz CIBJO Precious Metals Commission to Produce 'Blue Book' By Jeff Miller Posted: 03/16/07 RAPAPORT... The first meeting of the CIBJO Precious Metals Commission took place during the CIBJO Congress in Cape Town, South Africa, on March, 14, 2007, and the basic parameters for the Commission were established. As part of this objective the Precious Metals Commission has been tasked with outlining standards for precious metal in the jewelry industry worldwide. About 70 delegates attended the meeting where it was agreed that the Precious Metals Commission should produce a Blue Book of international guidelines for Precious Metal, in line with those, which already exist for diamonds, colored stones, and pearls. An international working group was formed which will report back to the next CIBJO Congress in Dubai in 2008. The definition of Precious Metal in relation to the jewelry, watches and silverware industries was restricted to gold, silver, platinum and palladium. The most contentious issue was allowing for tolerance in metal finenesses and this resulted in some lively debate. Vice president of the Commission, Michael Allchin, who is chief executive of The Birmingham Assay Office strongly advocated negative tolerance, as required by the UK Hallmarking legislation, which gives the consumer the best possible protection. However this standard is currently only observed in a few countries worldwide and there was much discussion as to the necessity for and practicality of this requirement. It was finally agreed that while the CIBJO Blue Book should recommend no negative tolerance, this requirement would be superseded where national law defined tolerance levels. Allchin said after the meeting, “We made good progress today and have established the basic rules and parameters for the Precious Metals Blue Book. CIBJO are clearly committed to delivering responsible practices and consumer protection throughout the jewelry industry and the regulation and definition of good practice for Precious Metals is a crucial element of this.”
Gianni Cacchione (president) - Italy Michael Allchin (vice president ) – UK
Stuart Grice – USA >> Related: World Jewellery Confederation “THE RETAILERS GUIDE TO DIAMOND JEWELLERY” LAUNCHED Amazon Jewelry Changing the way America buys jewelry!
Platinum the Element Basic Informationby Bentor, Yinon.found at Chemical Element.com - Platinum. Mar. 23, 2007. Name: PlatinumSymbol: Pt Atomic Number: 78 Atomic Mass: 195.078 amu Melting Point: 1772.0 °C (2045.15 K, 3221.6 °F) Boiling Point: 3827.0 °C (4100.15 K, 6920.6 °F) Number of Protons/Electrons: 78 Number of Neutrons: 117 Classification: Transition Metal Crystal Structure: Cubic Density @ 293 K: 21.45 g/cm3 Color: silverish Atomic Structure
First Energy Level: 2 Second Energy Level: 8 Third Energy Level: 18 Fourth Energy Level: 32 Fifth Energy Level: 17 Sixth Energy Level: 1 Isotopes
FactsDate of Discovery: 1735Discoverer: Julius Scaliger Name Origin: From the Spanish word platina (little silver) Uses: jewelry, containers, catalyst Obtained From: platinum ores
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![[Bohr Model of Platinum]](images/platinum%20element.gif)
