I guess you'd call it jade - maybe even a vaseline. Compare the clarity of a normal dark green on the left, to the milky hazy one on the right where the thread segment is just sort of a blur, and the dome passes little light. The milky one came from a collector two years ago in Maine, but I'm not sure if Maine was it's place of origin. Anyone ever seen another Boston like it? There are a few wavy steamy swirls here and there too, and one or two milk trailers.