This cool ring is by Bleue Burnham. Nine carat gold is common in Britain (and was used quite a lot elsewhere during the Victorian period, but 10k tends to be the more common lowest gold carat these days.
The ring is described as, “Handcrafted band ring in solid 9k gold. Lab-created sapphires set at textured face. Full British hallmarking engraved at inner band.”
It is currently on sale for Cdn$727.