Here is something a bit different in the way of a hoop earring from LA-based Jacquie Aiche. These hoop earrings are set with opals in a triangular shape (or as she terms them, pyramids). They are available in 14k yellow, white or rose gold. Though the site description says these are, “pave diamond double Ethiopian pyramid and square baguette hoops” I’m missing the diamonds and baguettes (which are generally rectangular and not square?) Despite the confusing description, they are pretty and a neat take on the classic hoop.
These sell for USD$3,815.

Very pretty but Ethiopian opals aren’t blue and, like you, I see no diamonds of any shape.