Aranmula kannadi (Malayalam) meaning the Aranmula mirror) is a handmade metal-alloy mirror, made in Aranmula, a small town in the state of Kerala, India. Unlike the normal "silvered" glass mirrors, it is a metal-alloy mirror or front surface reflection mirror, which eliminates secondary reflections and aberrations typical of back surface mirrors. The exact metals used in the alloy are maintained as a Vishwakarma (Malayalam) family secret. Metallurgists suggest that the alloy is a mix of copper and tin. It is polished for several days to achieve the mirror’s reflective surface. The mirrors received a geographical indication (GI) tag in 2004-05. Now available offline at Goa International Airport.