A '102 cut' is an advertisers phrase for the number of facets on a diamond stone.
The key to cutting a diamond is the geometry necessary to highlight the best qualities of an individual stone.
A 'good cut' is one that meets your requirements, which may be:
- the 'prettiest' diamond for your money, or
- the highest quality stone for your investment, or
- the cut you are sold believing that it's a 'good cut'; or
- the cut you want to buy.