Gold Star Omega+ is formulated to excel even under the most extreme conditions, requiring careful attention and focus. Omega+ is optimized for thermal expansion, permeability, and grain size distribution to ensure the highest quality castings and replicability of Master Patterns. Among casting investment materials, Omega+ boasts the highest content of non-crystalline Kristobalite. Gold Star believes that Omega+ is the best casting investment material ever produced, the result of extensive research into the raw materials and chemicals needed for its formulation.