A necklace made of blue jade from Itogawa Kotakiguchi. Commonly known as "Irikon-zawa jade." This is a high-quality jade with a single color type and a deeper blue hue. The deepest blue color among the jade pieces currently for sale. A silver bail and chain are included. Please feel free to ask if you have any questions. This is a valuable Irikon-zawa jade with a deep blue color, so please consider this opportunity.