Total amount of white light returned to the eye from a diamond or colored stone as the result of internal and external reflections. The major factors that affect the amount of brilliancy in a gem are refractive index, proportions, polish and transparency.
A phenomena unique and powerful in diamonds is the extent to which a diamond can reflect light. This "brilliance" is created when light enters through the diamonds table, reaches the pavilion facets, and is then refracted back out through the table to your eye.
The brightness that seems to come from the very heart of a diamond. It is the effect that makes diamonds unique among all other gemstones. While other gemstones also display brilliance, none have the power to equal the extent of diamond's light-reflecting power. Brilliance is created primarily when light enters through the table, reaches the pavilion facets, and is then reflected back out through the table, where the light is most visible to your eye.
Brilliance is a bitmap graphics editor for the Amiga computer, published by Digital Creations in 1993. Although marketed as a single package, Brilliance in reality consisted of two separate (but near identical-looking) applications. One was a register-based package also named Brilliance.