The National Geographic Magazine, Volume 113National Geographic Society, 1958 - Geography Indexes kept up to date with supplements. |
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Page 572
... Diamonds Scream on Cutting Wheel Winston's chief diamond cutter , Bernard de Haan , greeted me with a smile . His work- room whirred with the sound of electric motors , broken by the occasional piercing screech of a rough diamond ...
... Diamonds Scream on Cutting Wheel Winston's chief diamond cutter , Bernard de Haan , greeted me with a smile . His work- room whirred with the sound of electric motors , broken by the occasional piercing screech of a rough diamond ...
Page 578
... diamond , magnified 30,000 times , shows the triangular pattern of the crystal structure . This diamond , like any other , will split in only four direc- tions . Grain must be determined ( opposite ) before cleaving , lest the stone ...
... diamond , magnified 30,000 times , shows the triangular pattern of the crystal structure . This diamond , like any other , will split in only four direc- tions . Grain must be determined ( opposite ) before cleaving , lest the stone ...
Page 579
... diamond ever discovered in Brazil . poverished farmer in 1938 picked the stone out of the Santo Antônio River . He ... diamond , now among the British crown jewels , was worn by a hero of the Hindu epic , the Mahabharata , thousands of ...
... diamond ever discovered in Brazil . poverished farmer in 1938 picked the stone out of the Santo Antônio River . He ... diamond , now among the British crown jewels , was worn by a hero of the Hindu epic , the Mahabharata , thousands of ...
Contents
Mans First Winter at the South Pole Cold Fiercer Than Men Had Ever | 439 |
Young Giant of the Far South By Jean and Franc Shor With 37 color | 900 |
My Neighbors Hold to Mountain Ways Blue Ridge People of North | 906 |
Copyright | |
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