In a crown, the rhombuses are identical.
The summits are located on plans perpendicular to the axis (the levels).
The distance between 2 levels is constant for a given area.
3 parameters determine a precise zome
* N is the order number (integer from 3)
The crown number = N - 1 depends on it
The number of facets per crown = N
The total number of facets = N * (N - 1)