The treasures of Ireland, Nuada’s Sword, Lugh’s Lance, Dagda’s Cauldron and the Stone of Fal, happen to be striking analogues to the Tarot’s Wand, Sword, Cup and Disk. Since the word fal means stone, the Stone of Fal literally means Stone of Stones.
It was probably a powerful crystal which radiated energy. It was stolen by the Stuarts of Scotland and from there taken by the English and is said to be under the Coronation Seat in London. One arcane story tells that the original stone was that upon which the Biblical Jacob had his dream of the ladder reaching to heaven. The stone was then brought to Ireland by the prophet Jeremiah and the Tribes of Israel – particularly that of Dan.”
Source: Astro-Theology Etymology and Sidereal Mythology Tarot Astronomy
Image: Stone of Scone
Learn more: https://www.ancient-origins.net/artifacts-other-artifacts/voice-mightier-sword-stone-scone-roared-power-008500