Momme

A Japanese unit of weight measurement for silk. One momme weighs 3.75 grams per unit. The higher the number, the heavier the silk.
Found on http://www.encyclo.co.uk/local/22264

momme

A unit of weight used to measure cultured pearls in Japan. One momme is equivalent to 3.75 grams
Found on http://www.saffronart.com/sitepages/jewelry/glossary.aspx

MOMME

Unit of weight = 58 grains troy or .1325 ounce or 3.7565 grams.
Found on http://www.samuraisword.com/glossary/index.htm
No exact match found