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The original ceiling of the Sistine Chapel in Rome at Pope Sixtus IV's time was a starry "vault of Heaven," done in gold and lapis lazuli. This is attributed to Pier Matteo d'Amelia. In 1506 Pope Julius II appointed Michelangelo to repaint the ceiling with scenes from the Book of Genesis [38] St. Ulrich's and St. Afra's Abbey, [39] in Bavaria ...
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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.
When working on lapis lazuli, he uses the stone's rich blue hue to represent the vast expanse of sky, which serves as the backdrop for the heroic rescue. In his painting on limestone, Cesari capitalizes on the stone's natural green-gray tones to fashion the rugged crags that loom behind Andromeda, lending a sense of formidable grandeur to the ...
English: Large lapis lazuli specimen as seen at the National Museum of Natural History 2021 'Objects of Wonder' exhibit. This particular piece weighs over 100kg (about 250lbs). This particular piece weighs over 100kg (about 250lbs).
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In 1735, the French chemist Charles François de Cisternay du Fay determined that lapis lazuli, emerald, and aquamarine were luminescent. Josiah Wedgwood , in 1792, found phosphoresce from rubbing together two pieces of quartz or of agate , and wrote that the ruby gives "a beautiful red light of short continuance."
Astronomy Picture of the Day (APOD) is a website provided by NASA and Michigan Technological University (MTU). It reads: "Each day a different image or photograph of our universe is featured, along with a brief explanation written by a professional astronomer ."