artificial chay' wutlh nagh

wa'DIch, He'. ghaH qul naQmey vISIQbogh lighter mach 'ay' sample meQ, naH jajmeymaj vaj jen laHlIj raS Sut ram largh, rur 'ach not obvious; 'op SoHvaD tlhorgh pIw, Qugh, 'ach DeSDu' bISuDqu' 'e' meQ vIvup laHlIj raS.

chutmeyvam hardness check. laH qeng mach sample let objects (such as ngaQHa'moHwI'mey, taj, etc), QaQ laHlIj SuwamHa'bej yor scratch Hergh 'ej wej obvious; 'ej traces scratches chu' laH vIvup laHlIj raSDaq.

wejDIch, ghor laHlIj. laHlIj raS jengva' tlhop, Hub'eghtaHvIS 'ay' 'ej Dub entirely consistent 'ej porosity, color (bot) HIp smoothness 'ej brightness tlhab jen, poStaHvIS chaq SumtaH ghuS-laHlIj raS Da'elDI'.