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Shlomo Cohen, who in 1982 created the Princess Cut, has released "The Vinci Diamond," a 62-facet "pentacle" cut that incorporates the precise ratios of the Divine Proportion - a mathematical relationship popularized in Dan Brown's Da Vinci Code.

"I have been studying the geometric possibilities offered by the Golden Ratio since 2001, which is before I ever heard of Dan Brown or The Da Vinci Code," Cohen explained.

He went on, "Interestingly, like Dan Brown, I was inspired by Leonardo Da Vinci's study of the human body, the Vitruvian Man, and discovered that the artist had adopted the Golden Ratio to emphasize the understanding that symmetry denotes beauty,"

The Golden Ratio or Divine Proportion is a concept based on the relationship of three lines, of which the longest is 1.618 times the length of second longest, which in turn is 1.618 times the length of the shortest line. This ratio is considered divine as it can be found repeated over and over in nature. For example, each section of the index finger, from the tip to the base of the wrist, is larger than the preceding one by the ratio of 1.618.

This is also the ratio of the forearm to the hand. In addition, it has been used widely in art and architecture with the Egyptians using it in the construction of the pyramids, the ancient Mayan when building the Sun Pyramid at Teotihuacan and even the Greeks used it when constructing the Parthenon in Athens.

This concept of the three lines are the basis for everything that is perfectly proportional and examples of this being used can be found in past ancient temples such as the Parthenon in Athens, and Mayan Sun Temple for example.

Cohen created The Vinci Diamond correctly believing the stone would be "aesthetically more pleasing if it conforms to the ratios of the Golden Ratio.", and this is true as it has both a fire and brilliance that surpasses that of the standard 57-facet round diamond.

"The completion of my work at the same time as The Da Vinci Code has enjoyed such amazing international success is a happy coincidence," Cohen says.

"And the fact a major Hollywood movie by the same name will soon be released is an added bonus." Cohen is currently developing a marketing plan for the new cut, which has already been patented in Japan, Israel, Belgium, and the United States.