The diversis pictured is an example (it's for my Nephilim, Jace)
The diversis is the first rune a Nephilim ever draws with his or her amilaa. It is always different from any other rune that is drawn ever; there are no two alike. This rune is almost like an id for the Nephilim; one look from another Nephilim and they are recognized. Once a Nephilim has his or her diversis it appears on all of their weapons and armors that have or receive from then on out. The symbol is also binding, this means that any item with activated effects that has the diversis on it cannot have its effects activated by any other than its owner. An example of this would be with a Nephilim’s seraph blades.