medalet
/ˈmɛd(ə)lɪt/(also medallet)
noun
A small medal, usually one smaller than an inch or 25 mm in diameter; specifically a small medal-like devotional object worn by Roman Catholics.
Origin
Late 18th century; earliest use found in John Pinkerton (1758–1826), historian and poet. From medal + -et, probably after Italian medaglietta small medal, small devotional medal.