CORUNDUM GLASS:

Peg Leg

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Has anyone ever pad much attention to the check out counter at a grocey store.
The material over the price scanner is CORUNDUM. Man made but still CORUNDUM.
NOTHING BUT A DIAMOND WILL SCRATCH CORUNDUN other than another piece of corumdum. This is what the CHECK OUT people are not allowed to wear any diamond ring when working the check out counter because if you scratch the material the laser scanner will give you a false reading.
I used to buy these scanners at a big discount and recycle the precious metals and then remove the CLEAR CORUNDUM.
I would then use this clear corundun and make JEWELRY BOXES and line theses boxes with a colored materal and then I offered them as SAPPHIRE JEWELRY BOXES and this was the TRUTH because CORUNDUM is SAPPHIRE.
Just thought you might be interested.
Peg Leg
 

FYI, depending on color, corundum can be either sapphire or ruby.
 

Sapphires can be any color except RED and they are RUBIES.
Peg leg
 

Sapphires were also used in certain older hard drives as bearings.
 

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