A miliarense was the only fairly regularly minted silver coin

Silver coin

Silver coins are possibly the oldest mass produced form of coinage. Silver has been used as a coinage metal since the times of the Greeks. Their silver drachmas were popular trade coins....

 issued by the late Roman and Byzantine Empires. It was struck with variable fineness, generally with a weight between 3.8 and 6.0 grams. The miliarense was struck from the beginning of the 4th century under Constantine I with a diameter of 23 mm. The name was also applied to Byzantine

Byzantine

Byzantine usually refers to the Roman Empire during the Middle Ages.Byzantine may also refer to:* A citizen of the Byzantine Empire, or native Greek during the Middle Ages...

 silver coins from the 7th to the 11th centuries (see Miliaresion

Miliaresion

The miliaresion , was a name used for a number of Byzantine silver coins. In its most specific sense, it refers to a type of silver coin struck in the 8th–11th centuries....

).

There were two kinds of miliarense: light and heavy. It took 14 heavy miliarensia and 18 light miliarensia to equal one solidus

Solidus (coin)

The solidus was originally a gold coin issued by the Romans, and a weight measure for gold more generally, corresponding to 4.5 grams.-Roman and Byzantine coinage:...

.