Simply put!  This kitchen sink is not true Fireclay.  It is vitreous china .  The price is good, but the sink is poorly mis advertised.

1.  True fireclay is much more durable.  Dropping a pan in this sink will Crack it.
2.  The sink is difficult to install because the side walls are uneven, not square and poor quality control.
3.  The inside bowl is on 7" deep, even though the sink is 10" outer.  
4.  This is a large vessel sink, not a kitchen sink, will not stand up to time and use, like a traditional fireclay farmhouse apron kitchen sink should.

Look elsewhere,