What does the term 'Mine run' specifically refer to in the context of gemstones?

The term 'mine run' specifically refers to a mixture of gemstones extracted from a single mining operation that has not been sorted or graded. This collection includes all types of stones that the mine produces, regardless of their quality or size. The purpose of describing gems as 'mine run' is to convey that they have not undergone any selection process, meaning the batch can contain a wide variety of qualities—from lower to higher grade.

In many cases, this term is significant for gem traders and evaluators as it informs them about the potential diversity in quality and the types of stones present within a single collection. The other possible choices imply more specific classifications or processes that do not accurately characterize the breadth and unrefined nature of what 'mine run' denotes.