In recent weeks, various friends have returned from trips to Perth Museum full of praise for the staff, the renovated building and the stunning way in which the Stone of Destiny, around which the museum is designed, is displayed. To my shame, I have not yet visited but, infected by their enthusiasm, I certainly will.

The Stone of Scone, which was used as part of the coronation ceremony of Scottish monarchs for centuries before being stolen by England's Edward I, is a national talisman. Its chequered history, including its inspired kidnapping from Westminster by a group of intrepid Glasgow students, is testimony to Scotland’s struggle for independence and insistence on the recognition of our sovereignty. As such, it holds an iconic place in the country’s creation story. It might look like nothing more than a muckle lump of chipped and pitted sandstone, but it is freighted with significance and sentiment.

Nor is it alone in its effect on those who come to see it. Our museums and galleries are filled with objects that electrify the past, whether it’s weaponry and helmets left when the Romans decamped, or unique discoveries such as the Galloway Hoard, a priceless trove of Viking-era artefacts found near Kirkcudbright by a metal detectorist. Every such item brings us closer to those who lived here before, illuminating our heritage like arc lamps.

Read more Rosemary Goring

Yet there is one object that, to my mind, outshines them all, both for beauty and importance. This is the silver gilt casket believed to have belonged to Mary, Queen of Scots, which played a crucial role in her downfall.

Arguably the most beguiling piece owned by the National Museum of Scotland, this intricately tooled casket is currently on a mini-tour, bringing it within........

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