As it turns out, though, quartz is so immensely useful for a technological society that there’s no way for the supply of naturally formed crystals to match demand. Like copper before it ...

When we talk about crystals around here, we’re generally talking about the quartz variety used to make oscillators more stable, or perhaps ruby crystals used to make a laser. We hardly ever talk ...

Speaker two That’s excess. We’ve got excess! Success! Speaker one Next we’re going to make the crystals from the copper sulfate by removing the excess copper oxide. Now, as copper oxide is ...