Post a photo here, or one like it, so folks know what to look for. If you had added anything special - different color tape, a sticker, etc., post that too.
Folks here will keep an eye out for it, and have been known to recover bikes. they just need to have a really good idea of what to look for. Unfortunately, "gold 19 inch Diamond Mt. Bike" is not enough to go on.
Good luck, and sorry to hear about your loss.