This collie is turquoise. It is almost completely opaque (very slight transluscence on the ears), and appears to be made by layering blue and green glass over an opaque (white?) core. There is a lot of variety in this color – some turquoise collies are more green/teal, others are more blueish. This one leans towards teal and green. It is an older collie, with the additional Mosser “M” stamp on the bottom.