For whatever reason, the introduction of a piece of crystal and a battery simply ... That makes this the second-most expensive quartz watch ever and the most expensive not buoyed by the presence ...

It may sound like some sort of horological joke, but a quartz timepiece was just snapped up for more than half a million dollars at auction. This specific Élégante was designed by François-Paul ...

Small fractures and imperfections pock most natural quartz crystals. Some flaws are left ... to pass it off as something rarer or more expensive. A classic trick is carving common minerals into ...

While many crystals are accessible, some rare and powerful stones command staggering prices due to their uniqueness, energy, and scarcity. Here are some of the most expensive healing crystals in ...