Armlet of quartz crystal used in the formation of the medicine water of secret orders.
You never by any chance get a quartz crystal broken or twisted in this way.
That is because it is always found combined with oxygen in the form of silica as quartz crystal or sand.
M. S. M.—It is a quartz crystal, the opposite sides of which have been ground flat, probably by artificial means.
There is a considerable export of quartz crystal, commercially known as “Brazilian pebbles,” used in optical work.
Sometimes you find a diamond which is not a diamond; it is only a quartz crystal or some such worthless thing.
A quartz crystal set in the centre of the front of the cross probably held the relic.
You know how a quartz crystal oscillator in a radio-control apparatus will break, if you work it on a very heavy load at the peak?
Among the unusual forms of stones found in this association is a quartz crystal.
A test upon the surface of a quartz crystal showed that the stone was harder than quartz (but so is tourmaline).