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A. P. Williams alluvium amonds angles appears beautiful Belgian Congo bizel bolsa Borneo bought Brazil Brazilian diamonds bril brilliant cut called carats cement collet collet-side color conchology crystal cube Cullinan diamond cutting and polishing diameter diamond cutters diamond polishing diamond powder diamond-powder disposed edges English diamond estimated Europe facets flaws girdle Golconda grains guineas heat inches India Indian Diamonds inferior iron J. J. Berzelius jeweller laminae large Diamond lasques liant London lustre Mawe Mawe's ment mentioned merchant minerals mines mond necklace obtained octahedron offered for sale pebbles plane plate possession pounds per carat precious stones present proportioned purchase rare refraction Regent Diamond regular Rio de Janeiro rose rough Diamonds SECT sell Serro do Frio shewed shillings per carat skive sold split substances surface thin three carats ting tion trade Treatise on Diamonds washing weight workman worth