Danny Fekete is studying education at the Ontario Institute for Studies in Education, appropriately. 
Gems and Ink
There’s an increasingly rare type of fountain pen ink that was discontinued in 2001 called Parker Penman. The problem seems to have been that the ink was unusually saturated and included a suspension of metallic particles, achieving vibrant colours and fun reflective effects (as Diamine Majestic Blue is known to, today) but also clogging the pens used with a greater frequency than Parker wanted to be liable for. Naturally, these inks have become sought after for their now unique properties and historic cache by aficionados who are prepared to maintain their pens more fastidiously, so the price and mythos of the ink have grown. Penman sapphire is the most expensive ink I know of, selling often for more than $50 a bottle (current in-production inks tend to peak at $30 and most can be had for less than $12); Penman Ruby and Penman Emerald follow closely behind. Gemstone names are fairly common in inks and there are huge differences between the “ruby” of one brand and another. However, because of the enduring allure of the Penman inks, new inks that share their names are often decried for being the “wrong” colour—“that’s not sapphire, it’s too light, etc.”
What’s the best way to resolve disputes around emotionally-charged, contending aesthetics and nostalgia-induced disappointment? Science. The tremendous success of the Periodic Table of Videos (direct link here, or go here to read my ancient post) has encouraged further chemistry-based videos with the ever-beloved Dr. Martyn Poliakoff, including a recent one on the chemistry of gemstones. If you’re interested, you’ll get to learn about diamonds, sapphires, and rubies; more importantly, you’ll see Martyn’s wedding photos.