Yes, I want this also.
I've been looking around and couldn't find any manufacturer's that are offering a bluetooth microphone standalone. The only alternative is a headset. Not ideal for conferencing.
I then thought if I could get a standard microphone and plug it into a bluetooth transmitter. Seems that this won't work either as manufacturer's only offer for transmitting from phone to speaker or from other audio source to speaker/headset. Not in the order where the Android device is the destination.
