The late designer Hardy Amies wrote that a man's suit can be relatively inexpensive but ought to be accompanied by outstanding accessories. Which leads inevitably to this photo of Beatrice Amblard, proprietor of the leather boutique April in Paris. She's taking notes for a credit card case to be made of green stingray with a tan calf interior (that's the calfskin to the rear). The ray's skin, which is also called shagreen, has been sanded smooth so the case won't be a trial to remove from a pocket.
Expect to see a finished product in about six weeks.