What does the name jemma mean?

JEMMA

Gender: Feminine

Usage: English (British)

Pronounced: JEM-ə [key]

Variant of GEMMA

GEMMA

Gender: Feminine

Usage: Italian, English (British), Dutch

Pronounced: JEM-ə (English) [key]

Medieval Italian nickname meaning "gem, precious stone". It was borne by the 13th-century wife of the Italian poet Dante Alighieri.