Look up: momme

1. momme
   a traditional Japanese weight unit corresponding to the Chinese mace (see above). Jewelers continue to use the momme to measure the weight of cultured pearls; for this purpose it equals exactly 3.75 grams (about 0.132 ounce) or 18.75 carats. The unit is commonly pronounced 'mommy' in English.
   Found on http://www.unc.edu/~rowlett/units/dictM.
   
   
2. momme
   a traditional unit used to measure the 'weight' (density per unit area) of silk. The measure is the weight in momme of a standard strip of silk 25 yards long by 1.49 inches wide, an area of 1341 square inches or about 0.8652 square meter. This makes the silk momme equal to about 3.62 grams per square yard or 4.33 grams per square meter.
   Found on http://www.unc.edu/~rowlett/units/dictM.
   
   
3. MOMME
   Unit of weight = 58 grains troy or .1325 ounce or 3.7565 grams.
   Found on http://www.samuraisword.com/glossary/ind