Book 1

October 11th, 2022
English
Paperback

Book 2

August 11th, 2022
English
Kindle

Book 3

December 20th, 2022
English
Paperback

Book 4

April 20th, 2023
English
Kindle

Book 5

August 1st, 2023
English
Paperback

Book 6

January 16th, 2024
English
Paperback

Book 7

March 5th, 2024
English
Paperback

Book 8

宝石商リチャード氏の謎鑑定 夏の庭と黄金の愛

by Nanako Tsujimura, Utako Yukihiro, 辻村 七子
December 18th, 2018
Japanese
Paperback

Book 9

宝石商リチャード氏の謎鑑定 邂逅の珊瑚

by Nanako Tsujimura, Utako Yukihiro, 辻村 七子
August 21st, 2019
Japanese
Paperback

Book 10

宝石商リチャード氏の謎鑑定 久遠の琥珀

by Nanako Tsujimura, Utako Yukihiro, 辻村 七子
June 24th, 2020
Japanese
Kindle
June 17th, 2022
Japanese
Paperback
October 19th, 2023
Japanese
Paperback
September 19th, 2024
Japanese
Paperback