Currently experiencing issues with an Efficiency IV, Unbreaking III, and Fortune III enchanted Diamond Pickaxe. The enchantment Fortune III does not seem to be taking affect. Multiple veins of diamonds and coal have been mined but to no avail. For some reason, the Fortune enchantment doesn't seem to be effecting these resource yields at all. The other two enchantments seem to be working fine but Fortune III as mentioned previously just continuously yields single units of coal and diamond. I'm not sure how this is affected with Lapis and Redstone but I assume it should be the same.