In life, we have side quests. They keep us going as we strive for the main goal. Stopping for one is not losing focus. It is taking the time to be present in a moment, and finding the motivation to keep going.
Blue Diamond is that side quest, a reminder to enjoy the moments in between the journey. Like every side quest, it is short-lived. The collection is made in very small numbers and offered only as matching sets. Stay present, and the memory stays with you always.