Lustre of a Pearl
The Lustre of a pearl is perhaps the most important feature of all.
This is the outside orient of the pearl or the thickness that you can see. The lustre of a pearl will sometimes show an amazing reflection within the pearl layer itself. Sometimes these lustres appear to have a pinky hue about them. The lustre of a pearl can also pick up colours of an item that you are wearing or standing near, thus characterising itself to it's owner.