Case files of jeweler richard light novel volume 04 (mature)

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.