(ii) Tarshiyah (8658) - Refining pot (Tarshish) - Precious through refining.
A rare silver-white metal similar to aluminum. Beryl ranged in color from bluish green to yellow, white, pink and deep green. It was the first stone in the fourth row of Aaron's breastplate <Ex. 28:20; 39:13>. Other English translations render the word for beryl as chrysolite (NIV) and topaz (NEB). The wheels in the prophet Ezekiel's visions were described as resembling beryl <Ezek. 1:16; 10:9>; (Tarshish stone, NASB). The beryl was also the eighth foundation stone in the New Jerusalem <Rev. 21:20>.
(from Nelson's Illustrated Bible Dictionary)
(Copyright (C) 1986, Thomas Nelson Publishers)
(iii) We are made precious through His testing.
(iv) (a) 5:14