You can wear it on your right hand, but not on your thumb
According to whether the distinction between love, so:
Right hand little finger: no love.
Right hand ring finger: in love.
Right middle finger: minghuayouzhu.
Right index finger: single noble.
Do not wear in the left hand, because it is meaningful to wear on the left hand,
Little finger of the left hand: no marriage.
Left hand ring finger: marriage.
Left middle finger: engagement.
Left index finger: Unmarried
Thumb is the meaning of power, but also can do the meaning of self-confidence.
According to our custom
An engagement ring is usually worn on the middle finger of the left hand,
Wedding ring worn on the left hand ring finger;
An unmarried girl should wear the middle finger or ring finger of the right hand.