In this picture, one large brown circle contains 6 small circles which represent the 6 'Days' of Creation.
Starting from the yellow circle above:

Day 1 - Shows the division between Light and Darkness.
Day 2 - Shows the Firmament which divides the upper             and lower waters.
Day 3 - Shows the Gathering of the lower waters to one             place revealing Dry Land and the creation of             plant-life.
Day 4 - Shows the creation of the Sun, the Moon and             the Stars.
Day 5 - Shows the creation of Birds and Fish.
Day 6 - Shows the creation of Animals and Adam.

In the center is a brown circle which contains a small version of the whole. This represents:

Day 7 - Shabbat Rest - which reflects, receives and blesses the continuous evolutionary process of Creation.

Size - 12 x 17 cm (5 x 7 inches) Price - $2.00 per card (includes postage & handling)