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  2. Four Treasures of the Tuatha Dé Danann - Wikipedia

    en.wikipedia.org/wiki/Four_Treasures_of_the...

    The first recension of Lebor Gabála describes the Tuatha Dé Danann as having resided in "the northern islands of the world", where they were instructed in the magic arts, before finally moving in dark clouds to Connaught in Ireland. It mentions only the Lia Fáil as having been imported from across the sea. [3]

  3. Asterism (gemology) - Wikipedia

    en.wikipedia.org/wiki/Asterism_(gemology)

    Asterism on the surface of a blue star sapphire. A purple-pink star sapphire displaying asterism in a platinum ring.. An asterism (from Ancient Greek ἀστήρ (astḗr) 'star' and -ism) is a star-shaped concentration of light reflected or refracted from a gemstone.

  4. List of megalithic monuments in Ireland - Wikipedia

    en.wikipedia.org/wiki/List_of_megalithic...

    This is a list of megalithic monument on the island of Ireland. Megalithic monuments are found throughout Ireland , and include burial sites (including passage tombs , portal tombs and wedge tombs (or dolmens) ) and ceremonial sites (such as stone circles and stone rows ).

  5. List of hoards in Ireland - Wikipedia

    en.wikipedia.org/wiki/List_of_hoards_in_Ireland

    Gold models of ship and cauldron, torc, from the Broighter Hoard. The list of hoards in Ireland comprises the significant archaeological hoards of coins, jewellery, metal objects, scrap metal and other valuable items that have been discovered on the island of Ireland (Republic of Ireland and Northern Ireland).

  6. List of sapphires by size - Wikipedia

    en.wikipedia.org/wiki/List_of_sapphires_by_size

    Sapphires are a precious gemstone, a variety of the mineral corundum, consisting of aluminum oxide (α-Al 2 O 3) with trace amounts of elements such as iron, titanium, chromium, copper, or magnesium. It is typically blue, but natural "fancy" sapphires also occur in yellow, purple, orange, and green colors; "parti sapphires" show two or more colors.

  7. ‘Mysterious’ purple lump found at ancient Roman ruins was ...

    www.aol.com/news/mysterious-purple-lump-found...

    The “incredibly rare” lump was unearthed at a 1,700-year-old bathhouse in the United Kingdom. ‘Mysterious’ purple lump found at ancient Roman ruins was once ‘worth more than gold’ Skip ...

  8. Cardinal gem - Wikipedia

    en.wikipedia.org/wiki/Cardinal_gem

    The five cardinal gems. Clockwise from top: sapphire, ruby, emerald, amethyst, diamond. Cardinal gems are gemstones which have traditionally been considered precious above all others. The classification of the cardinal gems dates back to antiquity, and was largely determined by ceremonial or religious use as well as rarity. [1]

  9. List of World Heritage Sites in the Republic of Ireland

    en.wikipedia.org/wiki/List_of_World_Heritage...

    Ireland ratified the convention on 16 September 1991. [3] As of 2025, Ireland has two sites on the list, and a further three on the tentative list. [3] The first site listed was Brú na Bóinne – Archaeological Ensemble of the Bend of the Boyne, in 1993. The second site, Sceilg Mhichíl, was listed in 1996.