Lignum nephriticum cup manufactured from narra Wooden (the namesake on the province) manufactured opalescent colours when h2o is poured into it. These picket cups ended up a major pre-colonial and colonial industry of Naga. Naga could be the indigenous pre-colonial title of town. It's named following the narra tree https://donovandqdnz.blog-a-story.com/8067695/5-simple-statements-about-23naga-explained