"Ásbrúarsvell" (iridium, Ir 77), "keisaramálmur" and "hrapvottssilfri"

 Iridium, the most corrosion-resistant metal known, the "noblest" of metals in chemical sense, the  "emperor-metal" (keisaramálmur), because it resist "kóngavatn" (king's water, aqua regia, the strongest acid so called because it disolves the "king of metals" gold), can be named after the many colours of its salts, which was the orgin of the international name. And it can be done with a "poetic kenning"! Iridium derives from "iris" (rainbow). Irdidescence can be expressed by the adjective "lithverfur" or "róf-", "rófrænn" (in "rófsjá" (spectroscope), but could be used as a prefix too, expressing "colour-variety". And last but certainly not least we have the old poetic kenning "ásbrú", the bridge of the Aesir, which was a rainbow.  For the second part of the name we can take an old poetic name for "silver": "svell" (gleaming ice-layer): "mundar svell" (mund (hand), "mundar-' (of the hand) + svell,  the "gleaming ice layer of the hands, silver) or "fetils svell" (the gleaming sword).  Iridium is a platinum-group metal and the name "platina" is a Spanish diminutive of "plata" (silver). Iridium is silvery-white so the use of "svell" in a kenning-name for the "keisaramálmur" is appropriate "ásbrúarsvell": So three words are possible for iridiu: keisaramálmur, ásbrúarsvell and hrapvottssilfri, because iridium is the "witness of the giant space rock that impacted on Earth thereby killing  the dinosaurs.  A small layer of iridium in a layer that was 66 million years old was found all around the planet, which can only be of meteoric origin. Iridium is the "impact-witness element".