Kenkengems, operated by the company "midi," is a leading wholesaler of gemstones and parts related to jewelry making. Established in 2006, the company has its base in Yamanashi, known as a major hub for the jewelry industry in Japan. Kenkengems specializes in offering a wide range of natural stones, beads, loose gemstones, accessories, and jewelry-making materials for commercial, corporate, and designer clients.

The company prides itself on the extensive range of products, including exclusive and original items available only through their store. With direct bulk purchases from factories worldwide, they prioritize high quality and competitive pricing. In addition, Kenkengems aims to cater to a global market, reflected in their effort to provide services in English, enabling customers from over 20 countries to access their products.

Kenkengems not only focuses on providing a variety of high-quality gemstones and jewelry parts but also actively contributes to social causes. The company has shown its support through generous donations to aid relief efforts in the aftermath of natural disasters.