In geometry, a golden spiral is a logarithmic spiral whose growth factor is Φ, the golden ratio (or "phi", approx 1.618). This ratio is found in some patterns in nature and is how many artists have composed their works. This ratio is often referred to as the Fibonacci Sequence in nature. It is sometimes stated that spiral galaxies and nautilus shells get wider in the pattern of a golden spiral, which allows them to grow without changing shape. The origin of the ratio is unclear and some have found it dates back to the ancient Egyptians and the construction of their pyramids. During the 5th Century BC, Egyptian mathematician Euclid studied and obsessed over these proportions. It was ultimately popularized by Italian mathematician Fra Luca Bartolomeo de Pacioli in the 15th Century. Considered the Father of Accounting and Bookkeeping, he was a contemporary of Leonardo Da Vinci. This coffee table is made from welded and powder coated steel with inset, smoked black glass. The shadow-effect gives the table a minimalist appeal, but other color combinations will inspire different moods.