International Larimar Day is observed worldwide every November 22 to celebrate larimar, a rare semi-precious stone found only in the Dominican Republic. The holiday was established in 2018, commemorating the day in 1916 when Father Miguel Domingo Fuetes Loren first requested permission to explore the mine where he discovered this unique mineral. Larimar, a variety of pectolite, is known for its striking blue and green hues, with the most intense colors indicating higher quality. Events on this day include exhibitions, guided tours of the Larimar Museum in Santo Domingo, workshops, and craft fairs, all aimed at highlighting the stone's significance for economic and cultural sustainability. The Los Chupaderos mine, located near Barahona, is the most important source of larimar, which is often set in silver for jewelry. Celebrations encourage learning about the stone's history and promoting authentic larimar jewelry, often shared on social media using the hashtags #LarimarDay and #InternationalLarimarDay.