7 letters · 10 points in Scrabble
originBorrowed from the French céladon, from the character named Céladon, who wore pale green ribbons, in the novel L'Astrée by Honoré d'Urfé, from Latin Celadon, a warrior's name in Ovid's Metamorphoses, related to Ancient Greek κέλᾰδος (kélădos, “din, clamour”).
Etymology from Wiktionary, CC BY-SA 3.0