Outlet brooch perspective

Green Malakite inlay is a complicated technique used by my father at his workshop in Taxco. He is not around anymore. But My beloved brother Wolmar is still working with it an there I can make my designs.
Dimensions:
lenth:6.5 cm. = 2.55 inches
wide: 3.o cm. = 1.18 inches
thick: .2 mm. = 0.07 inches outlet