Gemstones pp 108-118 | Cite as


  • Michael O’Donoghue


It has not always been appreciated that a gemstone contains interior beauty and its surface appearance, attractive though this may be, is only part of the total power of attraction: such crystals as the octahedra of diamond and spinel were left virtually untouched in early times. The fashioning of stones began with the grinding down of natural crystal faces.


Cast Iron Diamond Crystal Diamond Powder Natural Crystal Methylene Iodide 
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Copyright information

© M. O’Donoghue 1988

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  • Michael O’Donoghue

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