Cutting:
The cutting of diamonds into the complex faceted forms we now associate with these
gems is actually a relatively recent practice. For centuries, rough diamonds were kept as talismans, and often not worn at
all, though natural octahedral (eight-sided stones) were sometimes set in rings. A Hungarian queen's crown set with uncut
diamonds, dating from approximately l074, is perhaps the earliest example of diamond jewelry. We know that the royalty of
France
and England wore diamonds by the 1300's.
In sixteenth century England, fashionable
lovers etched romantic pledges on window-panes with the points of their diamond rings, known as "scribbling rings".
The earliest record of diamond-polishing (with diamond
powder) is Indian, and probably dates from the fourteenth century. There are also contemporary references to the practice
of diamond polishing in Venice. The earliest reference to
diamond cutting is in l550 in Antwerp, the most important
diamond center of the period, where a diamond-cutters' guild was soon to be established.
Diamond Routes and Centers:
Indian diamonds reached Venice
by two Mediterranean routes: the southern route was by way of Aden, Ethiopia,
and Egypt, and the northern route was through Arabia,
Persia, Armenia, and
Turkey. Then, thanks to the Portuguese
discovery of the direct sea route to India, Antwerp
flourished as a diamond center, as the city was well-situated to receive vast supplies of rough from Lisbon
as well as from Venice.
After Spanish attacks on Antwerp
in1585, many diamond cutters relocated to Amsterdam. And the
Netherlands, with its liberal civil policies, attracted diamond craftsmen
(including many Jews) who were fleeing religious persecution in Spain,
Portugal, Germany and
Poland.
In the late1600's, as the English fortified their interest
in India, which was still the world's central diamond source, London became an important cutting center. Later, London became the primary world market of diamond rough.
Today, there are cutting centers all over the world,
most notably in Belgium, India,
Israel, South Africa,
and the USA.
Diamond Facts
· The largest Diamond ever found:
Cullinan at 3,106 carats.
· What is the hardest natural substance on Earth?
The Diamond.
· 80% of the world's diamonds are not suitable for Jewelry.
· Is a Diamond Indestructible?
No. The fact that Diamonds are
a hard substance refers to their ability to withstand scratching. But that is different than toughness, which refers to the
ability to withstand breaking or cleavage.
· How old are most diamonds which are found in nature?
1 billion
to 3 billion years, by most accounts.
· How do diamonds reach us?
They are formed deep within the Earth's
crust, and come to the surface via Volcanoes. Most diamonds are found in Kimberlite, which is volcanic rock.
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