Fig. 1
From: Corrosion analysis of unearthed jade from Daye Zhen Tomb of Northern Zhou Dynasty

a Unearthed jade; b OM images of the selected jade surface; c OM images of jade cross-section
From: Corrosion analysis of unearthed jade from Daye Zhen Tomb of Northern Zhou Dynasty

a Unearthed jade; b OM images of the selected jade surface; c OM images of jade cross-section