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To: Bill/WA who wrote (81777)7/19/2008 11:25:52 PM
From: Webster Groves  Read Replies (1) | Respond to of 116555
 
Three "nines" means the gold is at least 99.9% pure.
Four "nines" means the gold is at least 99.99% pure.

How much is that extra 0.09% of gold worth to you ?
It costs more money to refine gold to 4 nines than the inherent extra gold content.
It's not worth paying unless you have a process that demands the higher purity, such as semiconductor doping.

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