1 Peter 1:7 says proven faith is more precious than what, which perishes though refined by fire?

Answer: Gold

Trials prove faith, which is more precious than gold that perishes even though refined by fire.

“In this you greatly rejoice, though now for a little while you may have had to suffer grief in various trials so that the proven character of your faith—more precious than gold, which perishes even though refined by fire—may result in praise, glory, and honor at the revelation of Jesus Christ.”— 1 Peter 1:6-7 (BSB)