τὸ δ' ἐξαίφνης τὸ ἐν ἀναισθήτῳ χρόνῳ διὰ μικρότητα ἐκστάν → suddenly refers to what has departed from its former condition in a time imperceptible because of its smallness
embossed: V. εὐκρότητος.
chased with gold: V. χρυσόκολλος (Sophocles and Euripides, Fragment).