Lignum nephriticum cup fabricated from narra wood (the namesake on the province) made opalescent colors when water is poured into it. These wooden cups ended up a major pre-colonial and colonial market of Naga. Naga may be the indigenous pre-colonial name of the city. It can be named following https://alexisgugug.webdesign96.com/28647425/examine-this-report-on-23naga