"Generally speaking, based on the production process, dZi beads ought to count as a kind of" etched agate "[ agate to which alkaline metal has been applied and heated to create a surface for etching designs]," Chang Hung-shih explains.
「如果依製造方式歸納，天珠應該算是一種『鑲蝕瑪瑙』（將瑪瑙塗上鹼性金屬塗料後加熱，可以鑲蝕出各種圖案）」，張宏實指出。