I had lost my necklace

Haiz... today when I go for lunch, while I was eating, I touched my neck, I discovered that my necklace had lost.. I also dun know when I lost it? Where I lost it? I just know that the last time, I saw my necklace is on Sat..

I had lost the Pendant which is QQ had gave me from my birthday present.. I didn't mean to lost it.. I like the Pendant, not cos is QQ give me. Is the cost of words "Big Sis" that make me like it. And also sentimental value...

QQ, Sorry that I had lost the Pendant, u gave to me.