Lignum nephriticum cup product of narra Wooden (the namesake in the province) made opalescent colors when drinking water is poured into it. These wooden cups had been a major pre-colonial and colonial industry of Naga. Naga is definitely the native pre-colonial name of the city. It really is named https://casper7799888.laowaiblog.com/27634951/23naga-for-dummies