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Blue John (also known as Derbyshire Spar) is a semi-precious mineral, a rare form of fluorite with bands of a purple-blue or yellowish colour. In the United Kingdom it is found only at Blue John Cavern and Treak Cliff Cavern at Castleton in Derbyshire. During the 19th century, it was mined for its ornamental value, and mining continues on a ...
A considerable number of precious metal and stone jewellery pieces were uncovered in the excavation, many comprising one of the most ornate necklaces of its type that has been found to date. The first piece of treasure was found by MOLA dig leader Levente-Bence Balázs. A senior finds specialist at MOLA, Lyn Blackmore, stated that the number ...
Lapis lazuli (UK: / ˌ l æ p ɪ s ˈ l æ z (j) ʊ l i, ˈ l æ ʒ ʊ-,-ˌ l i /; US: / ˈ l æ z (j) ə l i, ˈ l æ ʒ ə-,-ˌ l i /), or lapis for short, is a deep-blue metamorphic rock used as a semi-precious stone that has been prized since antiquity for its intense color.
Polished stone axe Pike of Stickle on the left, from the summit cairn of Pike of Blisco.The central scree run has produced many rough-out axes. Harrison Stickle, the highest of the Langdale Pikes, in the right centre of the group Neolithic stone axe from Langdale with well preserved handle, found at Ehenside Tarn near the Cumbrian coast (now in the British Museum [a])
A large number of hoards associated with the British Bronze Age, approximately 2700 BC to 8th century BC, have been found in Great Britain.Most of these hoards comprise bronze tools and weapons such as axeheads, chisels, spearheads and knives, and in many cases may be founder's hoards buried with the intention of recovery at a later date for use in casting new bronze items.
The hoard includes almost 4,600 items and metal fragments, [8] [1] totalling 5.094 kg (11.23 lb) of gold and 1.442 kg (3.18 lb) of silver, with 3,500 cloisonné garnets [6] [9] and is the largest treasure of Anglo-Saxon gold and silver objects discovered to date, eclipsing, at least in quantity, the 1.5 kg (3.3 lb) hoard found in the Sutton Hoo ship burial in 1939.
The regalia contain around 23,578 gemstones, among them Cullinan I (530 carats (106 g)), the largest clear cut diamond in the world, set in the Sovereign's Sceptre with Cross. It was cut from the largest gem-quality rough diamond ever found, the eponymous Cullinan, discovered in South Africa in 1905 and presented to Edward VII.
In 2013, 13 million tonnes of coal were produced in the United Kingdom, employing 4,000 workers across 30 locations. [8] In the United Kingdom coal is mined from 3 deep mines and 26 surface mines. [9] [10] The majority of coal produced in England comes from underground mines; in Scotland, most coal is mined from open-pit mines.