Silver
'Silver' signifies spiritual good or truth from a celestial origin. It also represents the truth of faith, or the truth acquired from self-hood, or proprium. 'Silver' means scientific truth. In Genesis 20:16, it signifies rational truth. 'A piece of silver' signifies a truth, or a knowledge of truth. In the internal sense of the Word, it signifies truth, but also falsity.
(References: Arcana Coelestia 1551; Exodus 16, 20; Psalms 6, 12, 12:6)
Exodus 20:17
17
"You shall not covet your neighbor's house. You shall not covet your neighbor's wife, nor his male servant, nor his female servant, nor his ox, nor his donkey, nor anything that is your neighbor's."