Parallel
Exodus 36:19
Swete's Septuagint · Berean Standard Bible
καὶ ὁ στίχος ὁ τρίτος λιγύριον καὶ ἀχάτης καὶ ἀμέθυστος·
Additionally, he made for the tent a covering of ram skins dyed red, and over that a covering of fine leather (note: Possibly the hides of large aquatic mammals).