Lignum nephriticum cup product of narra Wooden (the namesake from the province) developed opalescent hues when water is poured into it. These wooden cups had been An important pre-colonial and colonial business of Naga. Naga would be the native pre-colonial identify of town. It's named following the narra tree https://holdenrerbm.ourcodeblog.com/28284791/5-simple-statements-about-23naga-explained