The ornamental design for a precious stonecutlargesplit corner crown design having 45 facets, as shown and described.
FIG. 1 is a top plan view of a precious stone cut large split corner crown design having 45 facets showing my new design;
FIG. 2 is a side view; and,
FIG. 3 is a bottom plan view.
The broken line showing of the pavilion of a gemstone is included for the purpose of illustrating environmental matter and forms no part of the claimed design.