Yen necklace

Necklace with 5 Yen hanger, 

The 5 yen coin is significant in Japan as a symbol of good fortune or "good connection" (go-en), because the Japanese words for "five yen" and "good connection" sound the same (五円 / 御縁, go-en). This makes the coin a popular offering at shrines for establishing a good connection with the divine, and it can be given as a gift to wish someone well. While generally considered lucky, some interpret the coin's hole as unlucky, though the hole also symbolizes a way to see into the future.