Lignum nephriticum cup fabricated from narra Wooden (the namesake in the province) manufactured opalescent colours when h2o is poured into it. These wooden cups have been An important pre-colonial and colonial business of Naga. Naga would be the indigenous pre-colonial title of town. It's named following the narra tree https://kameronoamzp.ka-blogs.com/81479846/what-does-23naga-mean