Nova crystals were a valuable commodity. Raw crystals freed from their rocky matrix were unstable (sensitive to jostling and heat) and highly explosive, and for further use they had to be bound to inert trace elements in refineries. The crystals themselves were bright green and easily crafted into gemstones for jewelry and decoration. Nova crystals were used as a makeshift currency in the Outer Rim and other places where Galactic Credit Standards were not accepted. Also, while still relatively volatile, they could be used as ammo or weapon components.
The planetMygeeto held immense deposits of nova crystals, which contributed to its great mineral wealth, and the crystals were also the primary industry of the planet Cotellier.
Nova crystals feature as a mineable resource in the 2001video gameStar Wars: Galactic Battlegrounds. In the game, they are found on virtually every world, and are used to research advanced technologies and pay for troops and vehicles.