As a proper noun crystal

is .

As a noun quenstedtite is

(mineralogy) a rare iron sulfate mineral that forms violet or white triclinic crystals.

As adjectives the difference between lustre and submetallic

is that lustre is polished while submetallic is (mineralogy) having a lustre like that of metal, but duller and less reflective.

As a verb lustre

is .

As a noun metal

is heavy metal (music).

As an adjective submetallic is

(mineralogy) having a lustre like that of metal, but duller and less reflective.

As adjectives the difference between dull and submetallic

is that dull is lacking the ability to cut easily; not sharp while submetallic is (mineralogy) having a lustre like that of metal, but duller and less reflective.

As a verb dull

is to render dull; to remove or blunt an edge or something that was sharp.

As adjectives the difference between reflective and submetallic

is that reflective is something which reflects, or redirects back to the source while submetallic is having a lustre like that of metal, but duller and less reflective.

As an adjective isometric

is isometric.

As a noun hauynite is

.

As nouns the difference between tectosilicate and hauynite

is that tectosilicate is (mineralogy) any of various silicate minerals, mostly aluminosilicates, with a three-dimensional framework of silicate tetrahedra with sio₂ or a 1:2 ratio, making up the greater part of earth's crust while hauynite is .

As nouns the difference between feldspathoid and hauynite

is that feldspathoid is (mineralogy) any of a small group of igneous, plutonic, and volcanic minerals formed in magma that did not contain enough silica to satisfy all the chemical bonds feldspathoids are silica-poor variants of the feldspar group while hauynite is .

As an adjective feldspathoid

is (mineralogy) resembling a feldspar.

As nouns the difference between sulfate and hauynite

is that sulfate is while hauynite is .

As nouns the difference between chloride and hauynite

is that chloride is while hauynite is .