Helium help : Comprehensive list of report parameters
Crown height at girdle minima

Applicable to any cuts except step cuts

Crown height at girdle minima

The crown height at girdle minima is measured using upper girdle facets. It is measured for each upper girdle facet and then the average, minimum, maximum and deviation values are calculated. The software finds the highest vertex of the whole model (it is one the vertices of the table) and the lowest vertex of each upper girdle facet. The height between the found vertices is considered to be the crown height at girdle minima for the given upper girdle facet, as shown on the figure below.

Crown height at girdle minima

DiamCalc Brilliant Cut Parameters