The wording, if we are referencing mine is not random or a surprise at all. Earlier in the match Crystal reached into her pocket and 'mined forth two diamonds'. Those two diamonds are the same ones being used in the recent string of posts.

The second moved just as the first diamond lens was struck to trap his hand by folding around it and the weapon like a large rock. The crystal is held in place by Crystal, instead of falling to the floor or weighing shin down.