to
the Genoese, who sold it in turn to Ludovico Moro Sforza. By the
intercession of the Fuggers it came into the Medici treasury at
Florence. When Francis Stephen of Lorraine exchanged this Duchy against
the Grand Duchy of Tuscany, he became the owner of the ' Florentine
Diamond.' Through this prince, who became later on the consort of the
Empress Maria Theresa, this diamond came into the private treasury of
the Imperial House at Vienna. At the coronation of Francis Stephen as
Emperor of Germany at Frankfort-on-the-Main, the 4th day of October,
1745, the ' Florentine diamond' adorned the crown of the House of
Austria."
It
is much to be regretted that this official statement should adopt the
erroneous view that the " Florentine " belonged originally to Charles
the Bold. If it did belong to him, a most violent supposition in any
case, it was certainly not one of the three diamonds which Robert de
Berquem tells us that prince placed in the hands of his great uncle, L.
de Berquem, inventor of the art of diamond cutting, " to have them
advantageously cut, according to his skill. He cut them forthwith (that
is apparently in 1476), one thick another thin {foible), and
the third in triangular shape.. And he succeeded so well that the Duke,
delighted at such a surprising invention, gave him three thousand
ducats in recompense." He adds that Charles gave the " foible," or thin
stone to Pope Sixtus IV.; and the triangular one to Louis XI; and that
he kept the third or thick one for himself, wearing it in his ring "
when he was killed before Nancy, one year after having had them cut,
that is in 1477." But it is not