Brown Jade, sunan kowa da kowa kuma ana kiransa da yashi na lu'u-lu'u, mutum ne mai launin ruwan kasa wanda aka yi shi da alumina, kayan carbon, da albarkatun ƙasa guda uku waɗanda ke narkewa kuma an rage su a cikin tanderun baka na lantarki, don haka sunan nan.Babban sinadaran da ake hadawa da Jade mai ruwan kasa shine Al2O3, kuma abinda ke cikinsa ya kai kashi 95.00% -97.00%, akwai kuma wani dan kadan na Fe, Si, Ti, da dai sauransu. Jade mai launin ruwan kasa shine mafi asasiy, domin aikin nika shi ne. mai kyau, faffadan aikace-aikace, arha ne, kuma ana amfani da shi sosai.
Jade mai launin ruwan kasa shine babban kayan da ke da aluminum aluminous, coke (anthracite), kuma yana da zafi mai zafi a cikin tanderun baka na lantarki.Ya dace da niƙa babban ƙarfe, kamar nau'in ƙarfe na gabaɗaya daban-daban., Iya ƙirƙira simintin ƙarfe, tagulla mai ƙarfi, da sauransu, kuma na iya kera na'urori na zamani.Grungy mai launin ruwan kasa yana da halaye na tsafta mai kyau, kyakyawan kyalkyali, ruwa mai ƙarfi, ƙarancin faɗaɗawar waya, da juriya na lalata.Tare da ɗimbin masana'antun masu tsayayya da wuta, samfurin yana da halayen fashewa, babu foda, da rashin fashewa a cikin aikace-aikacen.Musamman ma, yana da yawa fiye da ƙimar farashi na jasteas na gargajiya na al'ada, wanda ya sa ya zama mafi kyaun tarawa da filler na kayan gyare-gyaren launin ruwan kasa.
