title: Two types of markers in Google Maps using MarkerClusterer
body: <p>I have two kinds of geolocation informations: one is the exact location, the other is an aproximated, region level geolocation. As I show these informations on a map, I would like to be able to use a different marker type for each kind of location, the exact location would be green and the approximated location would be blue.
  I'm using the MarkerClusterer to group Markers into one bubble, but, I need two MarkerClusterers, one for approximated locations, another for exact locations. Doing so, my MarkerCluster is one for each kind of geolocation.</p>
  
  <p>My problem is: sometimes, the two Clusters overlaps, wich may lead into confusion:</p>
  
  <p><img src="https://i.stack.imgur.com/FmaOj.png" alt="Image with low zoom"></p>
  
  <p>As you can see, it shows that I have 7 markers there (here's it blue, but it's really a green Marker, as these geolocations are the exact kind).</p>
  
  <p><img src="https://i.stack.imgur.com/X58Vv.png" alt="Zoomed in image"></p>
  
  <p>But, zooming in, I have 9, because the second Cluster was underneath the first one (note that for now booth Clusters has the same color, it was supposed to be green (7) and blue (2) - so the user can be sure that the (2) locations are approximated)</p>
  
  <p>Any ideas on how can I make a Cluster of Clusters? Or another approach to let the user know that there are two kinds of information?</p>