Sugar is not a mineral, but rather a vegetable product. So it has no 'luster', so to speak.
Luster of tin
Graphite is black and posseses dull appearance
As a rock, gabbro does not have a luster. Luster is a term used to characterize a mineral.
Diamonds do not have a metallic luster; diamond luster is adamantine to waxy.
bright yellow, metallic luster
the answer is luster/
the answer is luster/
All minerals have luster. There are different types of luster. Pyrite has metallic luster.
Crystalline quartz is has a glassy luster. Other forms of quartz can have a dull luster.
The term for the way a mineral reflects light is known as its "luster." Luster describes how light interacts with the surface of a mineral, with terms such as metallic, vitreous, pearly, or dull used to categorize the type of luster a mineral possesses.
luster
luster
a luster
Luster of tin
produces no luster
Graphite is black and posseses dull appearance
Glassy luster, Metallic luster and Waxy luster.