Hi All, I'm intrigued by this descriptive term which seems to be cropping up of late on eBay: 'Iraurita nib'. e.g. https://www.ebay.co.uk/itm/JINHAO-250-Business-Signature-Pen-Iraurita-Nib-Metal-Fountain-Pen-14cm-5/401208541670 I've never heard of this material and have no idea what this actually is. Clearly we are all familiar with good old star-born Iridium as a decent hard wearing tipping material - there are some great YouTubes of true craftsmen electrically attaching a blob to an uncut nib and then cutting the slot - an awesome art to be sure. I have some theories on what Iraurita actually is: 1) Iridium with some gold plate somewhere on the nib (from the Latin: aurum being gold, and aureum / aureas being golden). 2) A novel Iridium/gold alloy of some kind but not widely described or documented yet. 3) No different metal tipping at all, just a melted tip (perhaps also quenched to increase hardness?). 4) Simply Iridium, but under a new name as a marketing ploy. 5) All source back to a single supplier in one of several warm non-English speaking countries who had a bad typo/translation day! If someone has some more knowledge as to the etiology of Iraurita then I'm sure everyone will be enlightened. Best regards, Eclectica.