The mithkal or sextula (in Persian and Arabic: مثقال) is an Arabic unit of weight used in Middle East, mostly for weighing gold and Saffron. It is equivalent to a little over 4.6 grams. The word mithkal is sometimes also used to mean a very small amount, due to its use in the Quran in this way.
Conversion
one Mithkal equal to:
4.6875 g = 72.3392 grains = 0.1507 troy ouncesReferences
Mithkal Wikipedia(Text) CC BY-SA