Mira, Ao, and Ino visit the beach at Suzu's suggestion. Then Suzu and Ao compete for the spot of Mira's best friend! The winner is...! On a different day, Mira and Sakura head to a mineral show on their own. Sakura gets very excited seeing all the different stones, but admits that she's having trouble motivating herself to study for her entrance exams. She's still debating what to do without a clear goal for her future. After summer break ends, they begin preparing for the cultural festival...
There's a bismuth crystal 
with mysterious coloring,
هنالك بلّورة بزموت ذات ألوان غامضة
Das ist ein Wismut mit
einer sonderbaren Färbung
Un cristal de bismuto de un color raro
Un cristal de bismuto de un color raro
Un bismuth de couleur étrange
un bismuto dal colore particolarissimo 
e un bellissimo pseudofossile!
Tem um cristal de
bismuto em furta-cor.
кристалл висмута
необычной окраски,