6 books in series
宝石商リチャード氏の謎鑑定
宝石商リチャード氏の謎鑑定 is a 6-book series with 6 released primary works first released in 2015 with contributions by Nanako Tsujimura.
| #1 |  The Case Files of Jeweler Richard (Light Novel), Vol. 1
| 3.86 | 7 reads | ||
| #2 |  The Case Files of Jeweler Richard (Light Novel), Vol. 2
| 4 | 5 reads | ||
| #3 |  The Case Files of Jeweler Richard (Light Novel), Vol. 3
| 4.25 | 5 reads | ||
| #4 |  The Case Files of Jeweler Richard (Light Novel), Vol. 4
| 5 | 3 reads | ||
| #5 |  The Case Files of Jeweler Richard (Light Novel), Vol. 5
| 4 | 3 reads | ||
| #7 |  The Case Files of Jeweler Richard (Light Novel), Vol. 7
| 3.5 | 2 reads |