Troy Pound (0.37kg):
A mass unit is used to measure precious metals. There are 12 troy ounces in every troy pound. One troy pound is equal to 373 grams.

Troy Ounce:
The traditional unit of weight for precious metals and gems.
1 troy ounce = 480 grains
1 troy ounce = 24 scruples
1 troy ounce = 20 pennyweights (North American jewelery trade)
1 troy ounce = 1.097 ordinary ounce
1 troy ounce = 8 drams
1 troy ounce = 31.1034768 grams.
1 troy ounce = 120 carats
1 troy ounce = 155.52 metric carats (diamonds / precious stones).
3.75 troy ounces = 10 tolas (Indian sub-continent)
6.02 troy ounces = 5 taels (Hong Kong)
12 troy ounce=1 troy pound
14.583 troy ounce =16 avoirdupois ounce (1Pound)
32.15 troy ounces = 1 kilogramme (Kilo)
32,150 troy ounces = 1 metric ton (1,000 kilos)
1000 troy ounces = 31.1 kilograms

pennyweight (dwt):
The pennyweight was the weight of a silver penny in medieval England.
It is no coincidence that there were 240 pennies to the English pound.
240 silver pennies were equivalent to a pound of silver.
The word sterling applies both to the English pound and to the standard
purity of silver.
1 pennyweight = 24 grains (dwt) (1 old time French penny)
1.55 grams=1 pennyweight (dwt)
20 dwt=1 troy ounce
240 pennyweights = 1 pound troy
24 grains=1 dwt
1 pennyweight =.05 troy ounce
1 gram=.643 pennyweight

Gram:
1 gram =.03215 troy ounce
1 gram =.643 pennyweight
1.555 grams = 1 pennyweight (dwt)
1 gram =0.00267923 apothecary or troy pound
1 gram =0.00220462 avoirdupois pound
1 gram =0.0321507 apothecary or troy ounce
1 gram =0.564383 avoirdupois dram
1 gram =0.257206 apothecary or troy dram
1 gram =0.6430149 pennyweight
1 gram =0.771618 scruple
1 gram =15.4324 grains
1 gram =1x10^-6 metric ton
1 gram =1x10^-4 myriagram
1 gram =0.001 kilogram
1 gram =5 metric carats
1 gram =1000 milligrams
1 gram =1x10^6 microgram
1 Gram = 5 Carats