Monday, February 8, 2010
The mined rough diamonds are usually converted into gems & jewelleries through a multi-step process called "cutting".
Diamonds are extremely hard, yet so brittle and can be easily split up by a single blow. The diamond cutting is traditionally considered as a delicate procedure requiring skills, scientific knowledge, tools and experience. Its final goal is to produce a faceted precious jewel where the specific angles between the facets would optimize the diamond luster that is dispersion of white light, whereas the number and area of facets would determine the weight of the final product.
The most time-consuming part of the cutting is the preliminary analysis of the raw stone. It needs to address several issues, bears much responsibility, and therefore can last years in case of unique diamonds. The following issues are considered:
The hardness of diamond and its ability to cleave strongly depend on the crystal orientation. Therefore, the crystallographic structure of the diamond to be cut is analyzed with the help of X-ray diffraction in order to choose the optimal cutting directions.
The diamond can be split by a single, well calculated blow of a hammer to a pointed tool, which is quick, yet risky. Alternatively, it can be cut using a diamond saw, which is a more reliable but tedious procedure.
Labels: Converting the raw diamond stones to Precious Jewelley
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