GIA developed what amounts to, in today's world, a RETAIL standard
of diamond quality. Those standards, again, actually come from
several centuries of the diamond trade, and diamond traders used it
quite successfully, which is why Liddicoat adopted it. All he did
was make up his own language to describe the same things. If you
involve yourself more deeply in the trade, you'll find that GIA -
the public GIA,- only scratches the surface of what diamonds are
about. There were no written > standards, really, for diamond
grading until Liddicoat devised the GIA system, but all he did was
codify the system that had been in place, in the diamond trade, at
least since Tavernier.
John, I think you are good at rhetoric, not that good on fact. You
appear to be muddled in your thinking.
First, G.I.A. has absolutely nothing to do with RETAIL standard of
diamond quality. If they do not provide any as to the
dollar value of a diamond, what they do cannot relate to a WHOLESALE
or RETAIL standard.
To me, learning how to separate diamonds based on clarity, color,
and fluorescence was the most important criteria that allowed a
critical perspective to help judge the beauty of a diamond when
comparing diamonds of similar cut and weight. Stated goal when I
attended the diamond course was that the students would be within
10% of color and clarity grade.
Again, there was no relationship to value of diamond.
When I first became interested in gemology I was aware of some
prejudice toward the G.I.A. diamond grading system. This was in 1977.
There were people in downtown Los Angeles jewelry center that
resented the system.
At that time I was aware that there was a system using terms first
pique, second pique, ect. which meant different things to different
people and there was no standardization until Richard Liddicoat
established the G.I.A. system.
Google history of diamond grading and you get:
"HISTORY OF THE GIA CLARITY SCALE Before the development of the
Gemological Institute of Americaâs diamond grading scale, many
companies were using their own grading methods. There was a growing
need for a common language. Then, in the early 1950âs, the president
of GIA, Richard T. Liddicoat, Jr., developed and taught a new scale.
It became the foundation for the modern diamond grading scale as we
know it today. "
I know you cannot believe everything on the internet, but when it
agrees with what I believeâŚ
Actually, from my experience as a student âIn Residenceâ for 6
months, and as Gemologist for 35 years, that is correct. What does
being a student âIn Residenceâ have to do with it? My experience is
that there was discipline, structure, and depth in that environment.
There were also some raging arguments between students and
instructors. One revolt by students resulted in a revision to what
was taught in one part of the colored gem portion of the course.
Over the years I have met many diamond sales people who used the
G.I.A. nomenclature. If I asked them if they had attended G.I.A.,
none of them had. They usually were the brother of cousin of someone
who had a diamond business and they relied on what they were told.
Misapplication of the terms was common place. Over time I have seen
less misand more diamond dealers with better
understanding of the G.I.A. system.
Those standards, again, actually come from several centuries of
the diamond trade, and diamond traders used it quite
successfully, which is why Liddicoat adopted it. All he did was
make up his own language to describe the same things. If you
involve yourself more deeply in the trade, you'll find that GIA -
the public GIA,- only scratches the surface of what diamonds are
about.
As a student in residence I was aware at the time that G.I.A. was
using an electron microscope to study composition and structure of
diamonds. I am sure over the 35 years since I attended, they have
pursued their investigations continuously. That hardly seems as if
they âonly scratch the surface of what diamonds are about.â
Mission statement by G.I.A.:
" GIA exists to protect all purchasers of by providing
the education, laboratory services, research, and instruments needed
to accurately and objectively determine gemstone quality.
Ensuring the Public Trust
A nonprofit institute, GIAâs mission is to ensure the public trust in
gems and jewelry by upholding the highest standards of integrity,
academics, science, and professionalism through education, research,
laboratory services, and instrument development. GIA attained its
leadership role through decades of integrity and ingenuity, and
everything we do is still driven by this mission."
I doubt you could name a scientific process that can be used to
determine about a diamond that G.I.A. does not use I have
no idea what you are talking about as far as how involvement in the
trade would lead anyone to find out that the âpublicâ G.I.A. only
scratches the surface. Please enlighten me as to what you know that
I do not.
Richard Hart, G.G. in ResidenceâŚ