
Francois Morellet, Pi 12. The succession of the angles correspond to the digits of pi, each multipled by 12 degrees.

Small cross: 10-11th centuries; large cross: late 12th century. The crosses were combined in the 13th century. Gold, silver on wood, precious stones.

Reliquary ornaments, ca. 1150-1175, depicting a city in the style of the manuscripts of the period, such as Jerusalem.

Reliquary ornaments, ca. 1150-1175, depicting a city in the style of the manuscripts of the period, such as Jerusalem.

Olifant, ivory, byzantine work, 12th century. From the treasury of the cathedral . The instrument was used as a replacement for the sound of the bells during…

Olifant, ivory, byzantine work, 12th century. From the treasury of the cathedral . The instrument was used as a replacement for the sound of the bells during…

Olifant, ivory, byzantine work, 12th century. From the treasury of the cathedral . The instrument was used as a replacement for the sound of the bells during…