luorescence in certain
precious stones.

It will have been seen that the text of Shakespeare's plays gives no
evidence tending to show any greater familiarity with precious stones
than could be gathered from the poetry of his day, and from his
intercourse with classical scholars, such as Francis Bacon, Ben
Jonson, and others of those who formed the unique assemblage wont to
meet together at the old Mermaid Tavern in London. That a diamond
could cost 2000 ducats ($5000), a very large sum in Shakespeare's
time, is noted in one of his earliest plays, the _Merchant of Venice_
(Act iii, sc. 1), and the following injunction emphasizes the great
value of a fine diamond:

Set this diamond safe
In golden palaces, as it becomes.
_I Henry VI_, Act v, sc. 3.
"Histories", p. 116, col. B, line 54.

In _Pericles_ we read (Act iii, sc. 2):

The diamonds of a most praised water
Do appear, to make the world twice rich.
Third Folio, 1664, p. 7, col. B, line 38;
separate pagination.

In Shakespeare's time but few of the world's great diamonds were in
Europe, though two, at least, were in his native country. All of them
must have been of East Indian origin, as this was before the discovery
of the Brazilian mines (1728). In 1547, Henry VIII of England bought
of the Fuggers of Augsburg--the great money-lending bankers and jewel
setters, or royal pawnbrokers, who generally sold or forced some
jewels upon those who obtained a loan--the jewel of Charles the Bold,
called the "Three Brethren", from three large balas-rubies with which
it was set; the central ornament was a "great pointed diamond"; of its
weight nothing is known. This jewel was lost by Duke Charles on the
field of Granson, March 2, 1476, where it was secured by the Swiss
victors; it was eventually bought by the Fuggers. The other fine
English diamond was that known as the Sancy, weighing 53-3/4 carats
(55.23 metric carats), acquired by James I from Nicholas Harley de
Sancy, in 1604, for 500,000 crowns. This is also stated to have
belonged to Charles the Bold. In 1657 it was redeemed by Cardinal
Mazarin, after having been pledged for a loan by Queen Henrietta
Maria, and at Mazarin's death, in 1661, was bequeathed, with his other
diamonds, to the French Crown. After passing through many
vicissitudes, it has recently come into the possession of