Second-year Kasaba University student Nakata Seigi rescues a foreigner being harassed by drunks. Wavy blond hair, blue eyes, and clear skin. The man who speaks unfaltering Japanese is Richard, a very competent jeweler with customers both domestic and international.
Thanked by Richard for being a "hero of justice," Seigi hires Richard to valuate a memento from his late grandmother, a pink sapphire ring. Through Richard, the mystery hidden in the ring is eventually revealed...
The history of jewels 
is one of fraud and theft.
.تاريخ المجوهرات حافلٌ بالاحتيال والسّرقة
Die Geschichte von Juwelen ist
die Geschichte von Betrug und Raub.
La historia de las joyas
es de fraude y robo.
La historia de las joyas
es una de fraude y robo.
L’histoire des pierres,
c’est celle de la fraude et des voleurs.
La storia dei gioielli è fatta di truffe e furti.
A história de pedras preciosas
é a de fraudes e ladrões.
В драгоценных камнях прячется
история мошенников и воров.