A "ruby anniversary" marks the celebration of 40 years of marriage. Traditionally, this milestone is associated with the gemstone ruby, which symbolizes love, passion, and commitment. Couples often commemorate this occasion with gifts that feature rubies, such as jewelry or decorative items, to honor their enduring relationship. In addition to gifts, many couples choose to celebrate their ruby anniversary with special events, such as a party or a romantic getaway. This anniversary serves as a reminder of the journey shared over four decades, highlighting the strength and resilience of their bond.