Black & silver silver tone chain necklaces with "You are the yin" & "to my yang" pendants with complimenting yin-yang charm halves.
Fandom Jewelry,Best Friend Necklaces,Hot Topic,Pokemon,Best Friends,Diys,Video Games,Jewlery
Necklace set with burnished silver & gold tone heart halves that read "Weirdo and Weirdo
Tribal Wolf Necklace Couples Jewelry set handcrafted by NameCoins, $84.99
LOVEsick Yin-Yang Best Friends Necklaces | Hot Topic ($35) ❤ liked on Polyvore
If I'm correct, yin and yang symbolizes two opposites working together to make a perfect balance. So, this would be really cute for best friends that have really different personalites or interests