The Gold Institute
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Supply and Demand


GOLD BAR SPECIFICATIONS

For good delivery bars
Weight
Purity
Marks
Appearance
COMEX 100 troy oz. (5% more or less) in one bar or three one-kilogram bars
Min. 995 fine
Weight, fineness, bar number and identifying stamp of the refiner
Surfaces that are reasonably smooth without irregularities such as layering, blow holes, etc.
London Bullion Market Association Min. 350 fine oz.
Max. 430 fine oz.
Min. 995 parts per 1000 fine gold
Serial number, weight, fineness, and acceptable issuer and assayer
Bars should be of good appearance, free from surface cavities or other irregularities, layering and excessive shrinkage, and must be easy to handle and convenient to stack.
Tokyo Commodity Exchange One Kilogram
99.99 percent pure
Serial number, weight, fineness, and acceptable issuer and assayer Surfaces must be smooth and free of cavities, bubbles and other irregularities.
Zurich Gold Pool Min. 350 fine oz.
Max. 430 fine oz.
Min. 995 parts per 1000 fine gold
Serial number, stamps of acceptable refiner, fineness Bars should be of good appearance, free from surface cavities or other irregularities, layering and excessive shrinkage, and must be easy to handle and convenient to stack.
Sources: New York Mercantile Exchange, London Bullion Market Association, Tokyo Commodity Exchange, Credit Suisse First Boston