"...and weigh about 6 to the ounce (20/100 grams)"
The "20/100 grams" is confusing. 6 to the ounce would be almost 5 grams each.
Alex
"There is a cult of ignorance in the United States, and there has always been. The strain of anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that "my ignorance is just as good as your knowledge."
-- Isaac Asimov