'Refined' in the Bible

And before the oracle is twenty cubits in length, and twenty cubits in breadth, and twenty cubits is its height; and he overlayeth it with gold refined, and overlayeth the altar with cedar.

And Solomon overlayeth the house within with gold refined, and causeth it to pass over in chains of gold before the oracle, and overlayeth it with gold.

and the candlesticks, five on the right, and five on the left, before the oracle, of refined gold, and the flowers, and the lamps, and the tongs, of gold,

and the basins, and the snuffers, and the bowls, and the spoons, and the censers, of refined gold, and the hinges for the doors of the inner-house, for the holy of holies, for the doors of the house of the temple, of gold.

And the king maketh a great throne of ivory, and overlayeth it with refined gold;

And all the drinking vessels of king Solomon are of gold, and all the vessels of the house of the forest of Lebanon are of refined gold -- there are none of silver; it was not reckoned in the days of Solomon for anything,