Sunset FractaGem8"x8"x9, 6lb cast crystal The Sunset FractaGem is a beguiling glass sculpture that captures the magical combination of numbers and biomimicry, embodying the craftsmanship and eye for detail of the creator. This work of art, inspired by the Fibonacci sequence and the Phi ratio, was created using the lost balloon casting method, whereby a silicone balloon is used to form a negative mold in which the glass is cast. After the glass is cut and polished,