Noun
A unit of weight in the Islamic world, usually taken as equivalent to 4.25 grams, used especially to weigh precious metals.
A coin originally having such a weight.
Source: en.wiktionary.orgThe mithqal did not go below 25 dirhams and was generally above, but from that time its value fell and it cheapened in price and has remained cheap till now. Source: Internet
The mithqal does not exceed 22 dirhams or less. Source: Internet