North porch of the St Mary's Church in Rushden

I have blipped Rushden's 13th century St Mary's Church before. This is the main door to the church - also called the North Porch.

I was checking Rushden's Local History website earlier today and what I could gather is that this part of the church was built in the 14th century. The arch looks quite beautiful and it seems as if the stones in the centre of the arch are glistened with gold...