The word itself says it all: Jewel.
In general, light invites, welcomes, communicates, thrills and reassures. Specifically, light enhances, reveals, enlivens, displays and narrates jewelry. It is always challenging to light displays of fine jewelry. Jewels thrive on light, but a light that hasn't been carefully designed can turn off even the brightest of gems. A diamond needs cool light with the right color temperature and high contrast with the background, while gold demands light that brings out its entire range of warm tones.