Shiny
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.
These are terms that reference the mineral's luster (or lustre).
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.
The shininess of the metal is known as its luster. Luster refers to the way light interacts with the surface of a mineral, rock, or metal, and it can vary from metallic to dull.
It can, but is usually more of a gray colour.
The carbon allotrope 'diamond' in its natural un-cut state is dull. however, when a jeweller cuts it , it becomes very shiny; a' girls best friend'. Other allotropes of carbon are graphite - dull, and buckminster fullerene ??? dull or shiny.
Only as a diamond crystal.
dull luster looks somewhat metallic, but it isn't quite as reflective.
Coal typically has a dull or matte luster, meaning it does not shine like metals or some minerals. It can appear dull, black, and brittle in texture.
Granite has a very dull luster when unpolished.
Tellurium has a shiny luster.
The words waxy, pearly, and dull describe a mineral's luster.
the type of luster which is dull
dull but pretty
Ruby (corundum) has a vitreous or glassy luster.
dull to earthy
Cadmium has a shiny luster when freshly cut, but it can develop a dull gray patina over time when exposed to air.