We claim the ornamental design for the assembly of and mounting for triangular cut precious stones, as shown and described.
FIG. 1 is a top plan view of an assembly of and mounting for triangular cut percious stones showing our new design;
FIG. 2 is a side elevation view thereof, it being understood that the broken lines are for illustrative purposes only and form no part of the claimed design;
FIG. 3 is a top plan view of the mounting shown separately without the stones for clarity of illustration; and,
FIG. 4 is a side elevation view similar to FIG. 2, but with the stones shown in exploded condition and the dot-dash projection lines illustrating how the stones are to be installed.
No bottom view has been shown as it forms no part of the claimed design.