I bought a drusy quartz necklace from Kohls and noticed a dark line running through a part of the quartz. The necklace I bought is in the link below. It is about 5-6 mm long and it is a dark purple line/vein. Is it normal to have veins running through it or is it a crack?
Omega Seamaster Quartz Vs Automatic
A quartz is electronic and battery powered. It uses a quartz crystal as a time base. The watch is as accurate as the crystal and a quality crystal can be very accurate. A coaxial watch is mechanical, with gears and springs. The term 'coaxial' refers to a gear configuration. A mechanical watch can be very accurate as well if it is built with high standards. The links below have more information.
