The Lustre of a Pearl
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:
|Lustre||Reflections 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|