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Ch. 3: Diamond and Pearl Treatments

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92 A TREATISE ON
 
 

 
 
cessive weight on their diamonds through unskilfulness (and for want of such curious machinery or mills, as are in Europe), which makes it not practicable for them to give diamonds a true polish.
N. B. Although this is the case in respect to the India manner of working, there come now and then stones tolerably well wrought and polished ; but these have been supposed to have been done by Europeans, and upon their mills and skeves, and to have been the property of such.
 
 

 
 
Some Account of Authors, who have heretofore treated of Diamonds and Pearls, and the Im­provements which have been made since their Times.
Though what I have advanced is really the produce of many years' critical observa­tion, in the course of dealing in rough and polished diamonds, and has been a work of much time, labour, and great ex­pense ; I am not a little pleased to see it
 
 

 
     
Ch. 2: Diamonds Page of 160 Ch. 3: Diamond and Pearl Treatments
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