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  2. Millennium Sapphire - Wikipedia

    en.wikipedia.org/wiki/Millennium_Sapphire

    Award-winning Italian artist and jewelry designer, Alessio Boschi, was chosen and the Millennium Sapphire project was born. Alessio Boschi rigorously researched subjects for the project and selected 134 representations of important individuals and milestones in human history. Several of the stone’s carvings also reflect its origin in Madagascar.

  3. Beryl - Wikipedia

    en.wikipedia.org/wiki/Beryl

    As of 1999, the world's largest known naturally occurring crystal of any mineral is a crystal of beryl from Malakialina, Madagascar, 18 m (59 ft) long and 3.5 m (11 ft) in diameter, and weighing 380,000 kg (840,000 lb). [13]

  4. Geology of Madagascar - Wikipedia

    en.wikipedia.org/wiki/Geology_of_Madagascar

    Madagascar is the world's leading producer of many colored gemstones, including sapphires, rubies, multi-coloured tourmalines, emeralds, amethysts, cordierites, aquamarines and garnets. Madagascar is also a major source of graphite , making it the second-largest producer in Africa.

  5. Hibonite - Wikipedia

    en.wikipedia.org/wiki/Hibonite

    Hibonite is a mineral with the chemical formula (Ca,Ce)(Al,Ti,Mg) 12 O 19, occurring in various colours, with a hardness of 7.5–8.0 and a hexagonal crystal structure.It is rare, but is found in high-grade metamorphic rocks on Madagascar.

  6. Morganite (gem) - Wikipedia

    en.wikipedia.org/wiki/Morganite_(gem)

    Following the discovery of a new locality for rose beryl in Madagascar in 1910, George Kunz proposed the name morganite at a meeting of the New York Academy of Sciences on 5 December 1910 to honour his friend and customer J.P. Morgan [6] [7] for his financial support for the arts and sciences, and his important gifts of gems to the American Museum of Natural History in New York and to the ...

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