“A prominent
Antwerp diamantaire stepped to the microphone at a diamond conference and told
an audience of miners, prospectors, and financiers that the entire diamond
business rested on two supports- vanity and greed. Fortunately, he said, the human race could be
relied on for a perpetual supply of both.”
- Matthew Hart, Diamond
Never buy a diamond ring from a jewelry store. Yes, that IS what I said. With a very large research paper on the trade of "blood diamonds" behind me and having the pleasure of knowing individuals on both sides of the diamond trade, it can certainly be said that I know a bit about the diamond industry. Just ask my wife Mandy! Jewelry stores are notorious for astronomical prices attached to inferior stones. And then when a sale rolls around, that's when the crap really fills the display cases! More on that later. The diamond consumer has to keep an eye out for foil-backing, filled cracks, color enhancement, prong-hidden flaws, and other techniques to transform a sow's ear into a faux-silk purse. Incidentally, turn and run if a jeweler refuses to take a diamond out of its setting for you to inspect. Just sayin'. As this post is "Part 1" of a diamond buyer's mini-education, I would like to use a portion of my research paper to address the origins of a diamond.
Taken from-
Cash for
Carats:
The Mysterious
Facets of Sierra Leone’s Conflict Diamonds
by
Mickey J. Lollar
The word “diamond” comes from the Greek
word “adamas”, which means
“unbreakable”. A diamond is a mineral
that is the carbon element in crystalline form.
The carbon atoms are arranged in diamond material in such a way that
they form a three-dimensional lattice pattern.
This interlocking lattice structure has strong bonds along all
boundaries, thus making a diamond the hardest substance of natural origin.
Beneath the Earth’s surface, extending
approximately 90 to 120 miles, diamonds are formed in eclogite and peridotite. There, underneath the superficial continents,
temperatures exceed 1650° Fahrenheit, with pressures exceeding 45,000 times the
normal pressure at sea-level. After
remaining in those conditions for millions of years, turbulent instability
within the earth forces the diamonds and accompanying magma to the
surface. As the material moves towards
the surface, it leaves a tunnel known as a “pipe”. Igneous kimberlite and/or lamproite are the
host rocks for any diamonds that have remained in the “pipes” after a surface
eruption. After the diamonds are deposited
on the Earth’s surface, erosion carries the stones to neighboring streams,
rivers, and, sometimes, the ocean.
“Alluvial deposits” are those found when diamond material makes its way
to streams and rivers and represent the area where the highest quality diamonds
are found due to their survival in abrasive conditions.
No comments:
Post a Comment