In geology, dull luster means little to no luster is exhibited by a mineral. This is due to coarse granulations which scatter the light in all directions.
Opal's luster can be found anywhere on a range from dull to vitreous.
Bauxite is a rock composed mainly of aluminum oxide and aluminum hydroxide minerals. The rocks also contain clay, silt, and silica. Bauxite has a dull, earthy tone luster.
These are terms that reference the mineral's luster (or lustre).
Shiny
It can, but is usually more of a gray colour.
dull luster looks somewhat metallic, but it isn't quite as reflective.
the luster is dull or some metallic.
it is dull
it is dull
Granite has a very dull luster when unpolished.
dull to pearly to subvitreous
Dull Luster, because Xenon is colorless it cannot have shinny luster.
The words waxy, pearly, and dull describe a mineral's luster.
the type of luster which is dull
dull but pretty
it is its luster
dull