The Lion’s armour had been polished to a gleam, the black enamel as glossy as midnight oil alloyed with diamond, the gold shining like the heart of a star. A scarlet cloak draped from his shoulders, its train five meters long, kept aloft by the artifices of Caliban; ten suspensor-floating devices wrought in the shape of short blades etched with the names of the Knightly Orders of his homeworld. On his left hip the Lion wore his greatsword, Adamant, its ruby-encrusted pommels and gold-chased hilt and crosspiece glittering as brightly as his armour. Below the right side of his breastplate the Lion’s belt was hung with six cylinders each the size of a man’s forearm, bound with platinum, the dull red leather cases containing the Proclamations of Caliban; the first laws decreed by the Lion after his ascendancy to command of the Dark Angels, swearing Caliban to the service of the Emperor for eternity.
A description of the Lion by Gav Thorpe in his short story in the book “The Primarchs”.