IshEz 50(4) :ܟܐܦܐ ܕܣܦܝܠܐ܂ ܗܢܘ܂ ܓܘܢ ܫܡܝܐ‏ : sapphire stone, i.e., the color of the sky
See the entire entry for sappīl, sappīlā n.f. sapphire