Quartz has a characteristic conchoidal fracture,yet rock shops often sell quartz as elongate six sided objects with a pointed termination.What causes this shape?
A)The rock shop cuts them that way with abrasives.The facets are cut to give the crystals more "power" for the crystal people.
B)The planar faces that form the object are crystal faces that grow when the crystals grew into a void.
C)Quartz usually is amorphous,consistent with its conchoidal fracture,but when it grows it grows against minerals with planar faces,causing this shape.
D)You should never buy a crystal like this because it is clearly fake,only artificial crystals grow this way.

Question

Quizplus · Accepted Answer

The elongate six sided objects with a pointed termination are actually natural quartz crystals. The planar faces that make up the crystal are crystal faces that grew when the quartz crystals grew into a void. This results in the characteristic shape commonly sold in rock shops.

Quartz Has a Characteristic Conchoidal Fracture,yet Rock Shops Often Sell