American Analog Set - The Only One

Keep me like a key, I'm the only one
Worn around your neck, I'm the only one
Lucky like a charm, I'm the only one
Closest to your heart, I'm the only one

Keep me like a jewel, I'm the only one
Curled around your finger, the only one
And hold me in your hand, I'm the only one
I'm lit up like a candle, the only one