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
Most of the time, cushion diamond cuts are sold in square shape with a length to width ratio of 1.00, but these luminous diamonds also come in rectangular shapes. If you are looking for a popular cut, buy a cushion diamond that is slightly rectangular in shape. The length to width ratio of that choice should be 1.10-1.21. The chart below should be a nice a guide to help you to evaluate the length to width aspect of cushion cut diamonds.