Board Thread:Câu hỏi và trả lời/@comment-5501257-20141223152939/@comment-24637980-20150103045806

Furthermore, the use of the so called equivalent, a ‘gem’, is some kind of crystal which is said to be worth ten thousand Gador, they are only used by the rich nobles, so there aren't many people with gems.

http://tensaitranslations.wordpress.com/2014/11/24/ch13-shopping/