Gema is the Spanish form of Gemma, from the Italian and Latin word for "gem" or "precious stone". The name spread through the Catholic world with Saint Gemma Galgani, the Italian mystic who died in 1903, and it is especially common in Spain and Mexico. In the United States Gema peaked at number 1677 in 2022 and ranks number 1996 in 2025 with 96 births.