Posted by Beth on August 12, 2015, 4:35 pm, in reply to "Photo comparison"
Many thanks for the comparison photos Mauriz.
I'm convinced. Once I wrapped my mind around the concept of two independent elements (or alternatively a cleverly articulated set of two elements), every thing fell into place.
By colouring the element on our right green, it is so easy to see that it is the same jewel in different configurations. What a great eye you have.