Fold Quartz
From Macross Compendium
The rare substance called Fold Quartz is required for manufacturing of ISC. Fold Quartz has a characteristic which emits a Fold Wave = Zero-time Fold wave which is not influenced by Fold faults and there is hope for use in various fields besides ISC. But, other than gathering it from the body of the alien lifeform, Vajra, there are no procurement methods, and there is also the problem that only a Queen (or semi-queen)-class Vajra can perform the refinement.