In my (limited) experience true red is encountered infrequently as a colour in Scottish agates. Generally, stones described as "red" are orange. However, this agate certainly has some blood running through it. A little dribble of vintage claret. The fortifications are warped by a combination of tubes (an inquisitive red "lance" is visible centrally) and zeolitic sprays visible along the edges.
I collected it in June 2016, after rain, close to where a stream enters the sea. Clearly it is an exceptional stone, and it was quite a surprise to see how it appeared once cut.
Agates from this area have not been documented to the same extent as areas further south.
41.5mm x 27mm