Actually Marron (Spanish for brown) Cohiba (all I could find in translation was a name for a cigar). It's also gorgeous in leathered finish. We almost ended up with it, but I will warn you, if you are considering it, it has many veins criss-crossing it and my fabricators were so wary about cutting it that we decided to use a different stone. Some fabricators wouldn't hesitate, so if you are set on it, I'd look for one who is confident about cutting veined large-grained stones like that. It reads more gray in leathered, brown in polished. jrueter just had the same installed and it's beautiful. See the link below, third post. It really is an amazing stone. Here is a link that might be useful: Marron Cohiba

when you dig around areas with bulbs... you can get very tiny bulblets... that you barely notice.. and for the first year or two.. they might just look like grass ... they can also seed around a bit ... if the flowers are left to ripen ... ken https://duckduckgo.com/?q=Scilla+siberica&t=ffcm&iax=images&ia=images

Is this a house you just bought? (ie. you don't know how long they've been there) Are the circles all exactly the same size? If so, I'd say littlebug has the answer. I also noticed the areas that look like water spots that rrah pointed out (the brown abnormal shapes by the light). Definitely something to look into.