This royal vertical ring is composed of a round moonstone at the
centre (for the moon disc), four lines of pavé diamonds
symbolizing the four lunar weeks, and two marquis diamonds.
IAH meant “moon” in ancient Egyptian language. The ancient Egyptians were
able to discover the secrets of the moon about 7 thousand years ago, and
they knew the lunar calendar, and the rise of this moon was the beginning of
the year The lunar month was divided into four weeks, each of which
represents a phase of the moon; symbolized here in the four lines around the
moonstone at the center.