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Diamond
Cutting
After rounding up, the diamond is faceted. The table
facet are first 16 facets (eight on top, eight on the
bottom) are put on b blocker or lapper. Diamond faceting
is a precision art, and the a wheel, which is a cast-iron
lap, must be carefully balanced and running true. The
diamond cutter relies on his eye to correctly proportion
finish the stone.
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Next,
the brillianteerer places the final 40 facets, and polishes
1 Brillianteering requires more skill than blocking,
and an experienced craftsman can often correct small
errors made in blocking. |
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The
final step in diamond cutting is a careful check of the work,
and a through cleaning by boiling in acid to remove all traces
of oil, dirt, and diamond powder.
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DIAMONDS,
GEMSTONES & CRYSTALS
FACTS & FIGURES |
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most popular diamond cut is the round brilliant,
a cut credited to a (perhaps mythical) 16th-Century
Venetian lapidary named Vincenzio Perruzzi.
The
natural shape of the octahedron lends it self
rounded form with a pointed bottom and flat top,
but various proportions and angles could be used.
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Only
in the 20th Century has mi mathematical theory, combined with
centuries of trial-and-error experience, revealed a set of
ideal proportions and angles for extra the maximum brilliance
and dispersive color from a diamond. |
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| diamond
1 | 2
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