Square cast lantern post adapter in several finish options.
Colorful or uniquely patterned glass diffusers are typically hand made and, as such, will exhibit some variation in both color and pattern.
Such variations should be considered normal and indicative of hand crafting rather than machine production.
The product is nice and matches perfectly with the lantern it is holding. The only problem is the screws to hold it in place, they are silver and being screwed into an oiled rubbed bronze piece. They are highly visible and I will need to paint them to get them to blend better.