Wiktionary
single crystals
n. (single crystal English)
Usage examples of "single crystals".
But they don't make it from just anything the way the single crystals do.
I believe that all the stations are enormous single crystals, hollow inside and coated with something internally, and that each is probably tuned to a specific destination by means of oscillation by some hidden power supply.
On the floor, arrayed around the well of light in a circular pattern, were wafers of gold, some studded with single crystals, others with three or four.