Amethyst under polarized light Size:M: 60 x 45cm Cottage in Hyde Park

Cottage in Hyde Park

Interior view of the dining room at the Cock Tavern

as can clearly be seen in the picture

1st April 1980

Amethyst under polarized light Size:M: 60 x 45cm Cottage in Hyde ParkSixteen figures showing specimens of amethysts viewed under polarized light and exhibiting veined structures. Brewster notes in his text: 'The observations are the result of an immense variety of experiments, which accidental circumstances put it in my power to make upon this interesting mineral. Having access to whole bagfuls of amethystine pyramids from the Brazils, in the possession of Mr Alexander, lapidary in Edinburgh, I have examined some