Diamond Spreading is a RAREMinion Upgrade, unlocked at Diamond VI. Any Minion with this upgrade will occasionally collect Diamond, alongside the regular item it collects.
Place this in an upgrade slot of a Minion, and the Diamond Spreading will generate Diamonds based on the amount of items the minion collects. Meaning that minions that collect multiple items, such as Snow Minions, have a higher chance to generate a diamond. Diamonds collected do not affect overall collection of resources.
This will not affect the minion's overall speed; it will collect items at the same speed it did without Diamond Spreading, it will now also collect Diamonds.
Trivia[]
Diamond Spreading will give on average of 1xDiamond for every 10 items harvested.
As such, it is recommended to put it on minions that collect a large amount of items per collection event.
Only 1 Diamond Spreading is allowed per minion.
Diamond spreading can be used to overwrite a minion collecting its resource when you obtain a Diamond.
Diamond Spreading is compatible with Diamond Minions, giving them a 10% increase in production speed.
An upgrade for Diamond Spreading was considered to be added with the Diamond Essence Shop, but was ultimately scrapped.[1]