"Sapphire substrates, or wafers. They're like jewels used in old watches. Idustrial purpose for a literal - jewel, in concept. There's ways to make artificial jewels, though I have no idea if they use sapphires. I know there's a way to do diamonds, but even setting up to do that is absurdly expensive. I'm sure you could find out more on your phone." Claudia said with a shrug, skipping over the topic of Joshua. She hadn't talked to anyone about that except H.G. so far and she really didn't know if she would. "And yup. So - all things considered, I say LEDs for trees."
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makebelievelog,