| Repairing and recutting a diamond does
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| | of a careless setter, or while being worn
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| not happen often, but it does to diamonds
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| | as jewelry. When diamonds rub together,
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| that have been damaged or those that were
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| | the sharp edges are worn down. Diamonds
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| not well made when originally cut. It is
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| | are known as angry stones because when
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| not too often that a jeweler needs
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| | they rub together they injure each other,
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| adequate knowledge in the repair or
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| | thus loose diamonds should be kept apart.
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| recutting of a diamond, but there are
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| | Worn diamonds can of course be
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| some losses due to the lack of a complete
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| | repolished, but doing this a number of
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| understanding of the possibilities.
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| | times will cut down on the weight of the
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| The most common of all diamond injuries
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| | stone.
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| in the trade is the chipping of the edge,
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| | Another type of injury that happens to
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| or girdle, of the brilliant during the
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| | diamonds is excessive heating, as in fire
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| operation of the setting the stone. It is
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| | exposure. If a diamond is heated to a
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| the popular opinion of the public that
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| | high enough temperature, it can unite
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| diamonds are too hard to suffer
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| | with the oxygen from the air causing
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| mechanical injury. However this is not
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| | blemishes. The damage to the stone can be
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| the case, the use of a careless file can
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| | substantial and fixing it will result in
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| lift tiny flakes from the upper surface
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| | a loss of weight.
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| of the brilliant. While the diamond is
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| | Recutting of diamonds is also worth a lot
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| much harder than a file it is not as
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| | of attention. Recutting is usually an
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| tough. Most often when a file is misused
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| | option when
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| a thin layer of diamond splits off. The
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| | Antiquity of the existing make
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| split forms a perfect cleavage of the
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| | Over thickness, or lumpiness exists
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| diamond, which causes it to split easily
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| | An overspread condition of the diamond
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| in certain directions. The rough cleavage
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| | Diamonds in the old-fashioned square or
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| will reflect in every part of the stone.
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| | cushion shape, with overthick make and
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| This type of serious injury can ruin the
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| | with a large cutlet are known in the
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| stone.
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| | trade as old-mine stones. These old mine
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| Whenever a stone owned by a jeweler or
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| | stones are becoming a bit scarce, most of
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| customer is injured, it should be sent to
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| | them have already been cut to modern
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| a competent diamond cutter, who, unless
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| | form. Often old-mine stones end up in the
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| he is instructed to remake it to the
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| | hands of pawnbrokers because most
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| ideal proportions, regardless of loss of
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| | jewelers will not give them the time of
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| weight, will use his best judgment in
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| | day. Often times the old-mine stones are
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| repairing the injury so as to leave the
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| | left too thick and are considered lumpy.
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| stone in the best salable condition.
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| | Not every old mine stone has the
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| When an injured stone is offered for
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| | remakings of a fine gem. It pays for
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| sale, and there is not an opportunity to
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| | jewelers to study cutting and remaking of
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| have it studied by an expert, the jeweler
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| | old gems. Having this type of knowledge
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| must look at the stone and decide how
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| | will almost always help the jeweler in
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| much the stone will sell for repaired.
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| | detecting faulty make in modern cut
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| When purchasing a damaged stone jewelers
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| | stones.
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| will often give low offers. The risk of
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| | In the case of overspread stones the
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| buying a damaged stone is that, when the
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| | central weakness or fish eye effect can
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| repaired stone is sold it will not yield
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| | be corrected by recutting to reduce the
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| the type of return the jeweler would have
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| | spread. Spread is a very desirable
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| expected.
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| | feature in a diamond, care must be used
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| Diamond injuries also occur in the hands
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| | to not reduce it unnecessarily.
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