"Gemini dice are part of the Chessex signature series dice. Signature dice are a compilation of the best selling colors of new dice released in the past few years. It includes a wide variety of colors and materials, but each is a unique and interesting addition to any dice collection. This set contains one D20, one D12, two D10 (00-90 and 0-9), one D8, one D6, and one D4. ".