Industrial Era (19th century)
Industrial Era (19th century)
Online lesson: History of Gemstones (SESSION 5) The discovery of the Kimberley diamond deposits and De Beers. Developments in diamond cutting (old mine vs old European cut). Other relevant gem discoveries: amethyst from southern Brazil, precious opal from Australia, sapphire from Kashmir, demantoid garnet and alexandrite from the Urals, pink tourmaline from the USA.
Oct 2, 9:00 AM or 7:00 PM (Lisbon/London timezone)
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