Size is as-packaged, or the diameter of loose marbles. ("D" is the diameter of round items other than marbles.)
These flowers feature three whorls of fringed petals; an outer whorl of seven petals cupping a middle whorl of five petals which surrounds a central whorl of three petals. At the center is a single stamen. The bloom is bicolor, both blue and green. The top half of the marble is totally crystal clear and acts like a magnifying glass, blowing up the flower when viewed through the top.