Culet Size
A culet is the point at the bottom of a diamond's pavilion if the culet is not eye-visible and is in the range of "none" to"small" the value of the diamond is not diminished. However, a larger culet will appear as a hole in the center of the diamond.

Finish
Finish is defined by GIA as "features that usually have little effect on appearance (e.g. pinpoint inclusions, subtle color distinctions, etc.)." The finish of a diamond consists of two components:

1. Symmetry - relates to the exactness of the shape and arrasngement of the facets.

2. Polish - relates to the appearance of the individual facets and how well each was polished.
The impact that "polish" and "symmetry" have on a diamond's value is not substantial, but
each item does signify the level of perfection in the finishing of each diamond.