Test your knowledge!

Problem

This reliquary was a gift for Jean Duc de Berry and would have highlighted ______\_\_\_\_\_\_.
Holy Thorn Reliquary (made in Paris for Jean, Duc de Berry), c. 1390s, gold, enamel, ruby, pearl, sapphire, and rock crystal, 30 x 14.2 x 6.8 cm (British Museum, London)
Please choose from one of the following options.
Get 8 answers correct in a row