Explain whether the global diamond supply chain a push or pull system, and whether the global diamond supply chain is an efficient or responsive system for make-to-order and make-to-stock jewelry.

Explain whether the global diamond supply chain a push or pull system, and whether the global diamond supply chain is an efficient or responsive system for make-to-order and make-to-stock jewelry. Provide examples to justify your reasoning.
Note: I want the student to “apply” these four supply chain concepts to this industry and explain and justify the logic. One may do this by the stages described in the case (i.e., exploration, sorting and grading, cutting and polishing, trading centers, manufacturing, and retailing. For example, trading centers would be characterized, as “responsive” while mining is “efficient.”