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Question:

Would amethyst scratch glass and/or quartz?

I'm trying to figure out if this pendant I got is really quartz or pretty glass. I have a chunk of real amethyst with jagged edges, and I'd like to know if I can use it to find out.

Answer:

Watches with 'mechanical' movements run off a spring. You have to wind them. These are the older type. The 'movement' refers to the little wheel and spring that 'ticks' Now there are watches that look the same on the front (they still have hands; I don't mean the ones with the digital display), but they are powered by a battery. But in this case, the part that controlls the pulses that move the hands, is electronic. Nothing can be seen moving. But at the 'heart' of that electronic controller is a quartz crystal. When it is subjected to electrical pulses, it 'buzzes', only at a frequency that is unimaginably fast. And that frequency is constant, so it can be used as a reference for the controller to move the hands. If all that is a bit much, then generally, if it needs winding, then it has a mechanical movement. And if you put a battery in it, then it is electronic, and will have a 'quartz' controller. They tend to be more reliable and keep time better.
Analog means it has hands which point to the time. Quite often they are quartz, but there may be wind up escapement watches. Quartz means that it uses a crystal oscillator to time the motor which turns the gears in a mechnical watch, or to time the counters in a digital watch. Quartz needs a battery in most cases.
Um I think it means theres a line on the quarter of an hour for example 12PM 3PM 6PM 9PM THEN 12AM and so on Actually im not sure maybe its just a brand name

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