Lignum nephriticum cup product of narra Wooden (the namesake of your province) manufactured opalescent shades when h2o is poured into it. These wood cups had been a major pre-colonial and colonial field of Naga. Naga is the indigenous pre-colonial name of the town. It's named after the narra tree https://stephenqcnyj.blogerus.com/52007253/the-definitive-guide-to-23naga