Any diamond culet size of Medium or smaller will be invisible to the naked eye, and have no negative impact on a
diamond's appearance. However, if a culet is Slightly Large or larger, it may allow light entering from the
crown to pass straight through the culet facet, reducing the diamond's brilliance. This may also make the culet
appear as an
inclusion, or create a dead area on the diamond where the light is escaping through the bottom.