Lignum nephriticum cup made of narra Wooden (the namesake from the province) produced opalescent colours when h2o is poured into it. These wood cups were A serious pre-colonial and colonial business of Naga. Naga is definitely the indigenous pre-colonial name of the town. It is named following the narra https://waylongsdoy.verybigblog.com/27826208/a-simple-key-for-23naga-unveiled