Virtuous - The word implies the virtue of earnestness, or strength of character, rather than of simple chastity.
A crown - With the Jews the sign, not of kingly power only, but also of joy and gladness. Compare Song of Solomon 3:11.
Related Commentaries of Proverbs 12:4
Proverbs 12:4
4 A virtuous woman is a crown to her husband: but she that maketh ashamed is as rottenness in his bones.