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
Lucara says two other exceptional white diamonds - an 813-carat stone and a 374-carat stone - were also found at the Karowe mine. This has been an amazing week for Lucara with the recovery of the second largest and also the sixth largest gem quality diamonds ever mined, Mr Lamb said.