The Case Files of Jeweler Richard manga volume 1 features story by Mika Akatsuki and art by Nanako Tsujimura.

When Seigi Nakata rescued a handsome young jewelry appraiser from a group of drunken assailants, he got more than he bargained for! The appraiser is Richard Ranasinghe de Vulpian, a brilliant and mysterious British jewelry expert. Seigi hires him to appraise a family heirloom…and that is just the beginning. Together, they unlock the secret messages hidden in the hearts of precious stones–and those who possess them.

The Case Files of Jeweler Richard manga volume 2 features story by Mika Akatsuki and art by Nanako Tsujimura.

After helping out the impossibly elegant Englishman Richard Ranasinghe de Vulpian, Seigi accepts a job in Richard’s jewelry store. One day, Takatsuki, a flashy-looking host, comes in looking for something to impress his clients. Takatsuki’s eyes light on an amethyst, at which point Richard relates to him the legend behind the stone. What is the jewel’s story, and how does it affect the haughty host’s decision?

The Case Files of Jeweler Richard manga volume 3 features story by Mika Akatsuki and art by Nanako Tsujimura.

Seigi, an ordinary university student, works at a jewelry shop run by the decidedly not-ordinary Richard. One day, a young boy named Hajime walks in, takes out a small cat’s eye gemstone, and asks Richard for a matching stone. What story lies behind this particular request?