From BiblePortal Wikipedia

Vine's Expository Dictionary of NT Words [1]

1: Χρυσίον (Strong'S #5553 — Noun Neuter — chrusion — khroo-see'-on )

"gold," is used of ornaments in  1—Peter 3:3 , RV, "jewels." See Gold , No. 2.

Morrish Bible Dictionary [2]

A general name for costly ornaments of dress, of silver, gold, or precious stones.  Exodus 3:22;  Song of Solomon 7:1;  Isaiah 3:21;  Hosea 2:13 , etc. In  Genesis 24:53 the word is used for the equipment of the bride. In   Malachi 3:17 it is used symbolically for the remnant that will be precious to the Lord of hosts in a future day, as the saints are now during the rejection of the Lord Jesus by the world.