Neurotransmitters and hormones are the chemicals which control every system and process within the body. Norepinephrine is both a neurotransmitter and a hormone. As a result, its role within the body is essential to normal body and brain function.orepinephrine's role as a brain and body stimulant requires a certain level of this chemical to be present to achieve normal mental and emotional function. Its primary mechanism is that of arousal.
A normal diamond pickaxe has 1562 durability so it may get you as much stone with that pickaxe. With Unbreaking III however, that may quadruple your mining count, or around 6248 stone. Efficiency enchantment just makes mining faster and does not improve durability. Sources: http://minecraft.gamepedia.com/Pickaxe
A diamond's true worth is based on its carat size, it's clarity and color. It is also based on how well it is cut. These are the 4 Cs of diamonds. Of these four factors, shady jewelers take advantage of consumers most on a diamond's cut. The cut of a diamond determines how much light is refracted and how much brilliance and sparkle a diamond has. A poorly cut diamond won't sparkle as much and is much more common-thus costing jewelers much less. If a diamond is cut poorly, its value goes way down.