Ah, thanks. Silicon is an element. Silicone is a polymer. (Containing silicon.)
But you are wrong about all rocks being crystals. In popular nomenclature, crystals tend to be sparkly, transparent, and geometric. Rocks don't match very well. Just like how in popular nomenclature, tomatos and bananas aren't fruits.
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*berries I mean.
rocks are crystals. tomatoes, bananas & berries are fruits.
what laymen call them doesn't change the reality.
just like it doesn't matter that the person in the video, and the person sharing the video, think lasers cut the rocks... doesn't change the (nearly absolutely certain) 100% probability that the crystalline structure of those rocks is cubic & the fractures are entirely natural.