Hardest, most brilliant lustre seen in minerals with high refractive indices.
Lacks any noticeable reflection, appearing earthy or granular.
Feels and looks oily, often seen in minerals with surface weathering.
Opaque, shiny surface characteristic of metals and some sulfides.
Sheen caused by light interference in thin surface layers (e.g., muscovite).
Characteristic of resins like amber, often with medium refractive indices.
Radiating, fibrous lustre seen in minerals like gypsum or tiger's eye.
Intermediate between metallic and vitreous, often seen in oxides with high density.
Standard glass-like lustre, typical of 70% of all minerals.
Soft, translucent sheen reminiscent of beeswax.
Detailed mineralogical classification of how light interacts with a surface.