Lignum nephriticum cup manufactured from narra Wooden (the namesake of the province) developed opalescent colours when h2o is poured into it. These wooden cups have been a major pre-colonial and colonial marketplace of Naga. Naga could be the native pre-colonial name of town. It's named following the narra tree https://rafaelozlvg.answerblogs.com/28331095/top-latest-five-23naga-urban-news