The largest part of the Treasure dates back to the end of the 19th century when the basilica was built. It is mostly composed of jewels of the 19th and 20th centuries, with master pieces by famous artists from Lyon or Paris, such as Armand-Calliat or Froment-Meurice.

Many families from Lyon, even low-income families, would contribute to the buildding of the basilica: often silver, but also items such as jewels, gems or golden embroidery.

This act of gifting continues to this day, as a thanksgiving for a granted prayer, a recovery or an event that may be perceived as a miracle.

The Treasure of the cathedral is priceless. Some influential contributions enriched the Treasure. These included Cardinal Fesch, the nephew of Napoleon I, the Archbishop of Lyon and Napoleon III. These influential donors add to the priceless value of the Treasure.

To honor these gifts, they are kept in service, used regularly for Liturgy in important ceremonies each year.