non-metallic luster id

adamantine-transparent to translucent with extraordinary brilliance

Dull Earthy-poor reflective properties much like unglazed porcelain. Rough and porous surface.

Greasy-appears to covered in Vaseline.

pearly-iridescent hue. like the inside of mollusk shell.

pitchy-tar-like appearance.

resinous-looks like amber or tree sap

satiny(silky)- fine fibrous structure, looks like silk cloth.

vitreous(glassy)-reflective properties similar to glass. 70% of all minerals have this luster.

waxy-looks like the surface of a candle.