What is the origin of glitz?

It’s easy to imagine how glitz is related to the word glitter, but the two words share a far deeper origin: the Proto-Indo-European root gʰel- “to shine.” This root crops up in at least a dozen brightness- and vision-related words, including glance, glare, glass, glaze, gleam, glimmer, glimpse, glint, glisten, glister, gloss, and glow, and is also the source of many light color names, such as gold and yellow in English and khlōrós “greenish-yellow” in Ancient Greek, from which chlorophyll is derived. Glitz entered English in the 1970s, which is surprisingly recent.