How reflective or shiny something is
You can test its hardness on other minerals to find it hardness. It can help classify it better.
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.
luster
luster
luster
luster
luster
get a mineral tester and find it cheap. some rip you off
The tests you can do is the streak test, the luster test,the finger nail test(which is scratching it ti see if its hard or not).
You can test its hardness on other minerals to find it hardness. It can help classify it better.
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.