Buying Guide

The Lustre of a Pearl

Qualities of Pearls - Lustre

Lustre, or luster, describes the intensity and sharpness of light reflected from the surface of the pearl.

Of all a pearl's qualities, lustre is perhaps the most important to consider.

The different qualities of Lustre in the GIA Pearl Description System are:

LustreReflections of Light
Excellent Bright and sharp
Very Good Bright and near sharp
Good Bright, but not sharp, slightly hazy
Fair Weak and blurred
Poor Dim and diffused