The weight of the silver kada for astrological benefit should be between 7 grams and 41 grams. If you are making silver kada then opt for 7, 21, or 41 grams. Another option is 108 grams.
The silver kada for mental and physical strength should be of 108 grams.
The kada for financial solutions and money related matters should not be less than 40 grams.
The kada for love and other relationship matters should between 15 grams and 25 grams.