1 Ganglia-groups of neuron cell bodies that lie peripheral to the central nervous system in vertebrates. 2  Bipolar neurons-cell body located near the middle of the axon; characteristic of retinal neurons. 3  Unipolar neurons-cell body lies off to one side of axon; characteristic of sensory neurons.
The principal host for diamonds are rocks formed in the earth's mantle that are known as eclogite and peridotite that are carried to the earth's surface in magmas known as kimberlit e and lamproite.
Natural Diamonds. Diamond is an allotrope of carbon, a mineral that forms at least 100 miles under ground. The pressures and heat that are required for diamond to form only exist at these depths. Contrary to popular belief, diamond is not a product of coal in any way.