Whether you are a novice to mining or an old timer at recovering gold, sooner or later the time will come when you'll want to weigh your finds and find out just how much of the yellow metal you have. If you don't have one already, buy yourself a scale (either the older balance type pictured above or one of those new-fangled digital models) and use the following as a guide:
24 grains = 1 pennyweight
20 pennyweights = 1 troy ounce
12 troy ounces = 1 troy pound
If you are one of those miners who prefers the avoirdupois weight system, here is a troy-to-gram conversion chart:
1 grain = 65 milligrams
1 pennyweight = 1.555 grams
1 troy ounce = 31.104 grams
1 troy pound = 373.248 grams
Remember, gold's symbol on the Periodic Chart of the Elements is Au (from the Latin word for gold, "aurum"). Gold is a noble metal with a very high density and specific gravity, which means it is typically quite heavier than the other elements around it including water and larger, less dense rocks, sands, or gravels. Gold rarely if ever tarnishes and is highly malleable (soft enough to be flattened, shaped, or worked) and extremely ductile (can be drawn into very thin wires or "threads").
There you are. A morsel or two of information on gold measurements that may prove helpful.
(c) Jim Rocha (J.R.) 2008