It is a white high-melting crystalline solid.

[3] Germanium disulfide was first found in samples of argyrodite.

The fact that germanium sulfide does not dissolve in aqueous acid facilitated its isolation.

[5] Germanium disulfide is produced by treating a solution of germanium tetrachloride in a concentrated hydrochloric acid solution with hydrogen sulfide.

[6] It is insoluble in water, it dissolves in aqueous solutions of sodium sulfide owing to the formation of thiogermanates: Natural GeS2 is restricted to fumaroles of some burning coal-mining waste heaps.