Shopping Cart (0)
My Diamonds (0)
My Jewelry (0)
My Diamond Pairs (0)
Last Visited Products
By  , Thursday, September 14, 2006

 The GIA Symposium featured “Poster Sessions,” held on the Hyatt’s lower level.  Colored stones, treatments, analysis, geology, education, marketing, jewelry design and other topics had representation.  Poster presenters were on hand at specified times to discuss their displays.  Several examples follow: 

Jason Quick of AGS laboratories was the host in a space featuring detailed analysis of components of the AGS performance-based diamond cut grading system.

GIA Symposium 2006

Jason Quick

One of the AGSL graphics showed examples of different components incorporated into (or being researched for) AGSL’s light performance metric:  Grayscale 30 and 40, ASET 30 and 40, forward and reverse fire maps, refraction/virtual facet modeling and an angular spectrum diagram.

GIA Symposium 2006

Another graphic in the AGSL area showed VLVF(Very Large Very Fine) matrices.  Briefly described, the 2 large ‘modern art’ seeming murals below are actually mosaics, each composed of 62,500 individual ASET (L) or fire map (R) images.  The zoomed relief shows a rectangle of individual images near Tolkowsky’s diamond.  In addition to being technically interesting these matrices are beautiful and colorful and have been nicknamed ‘The DNA of diamond design.’

GIA Symposium 2006

Nikolai Kouznetsov’s space featured information on the demantoid, the most brilliant variety of green garnet.  It is the “chromium-green variety of androdite discovered in the Central Ural mountains of Russia in the mid 19th century.”  It's hardness is almost 7, refractive index is 1.89 and dispersion is .057 (diamond is .044).  Many people are not aware of the demantoid, which is one of the most brilliant gemstones in the world.

Nikolai Kouznetsov

Sergey Sivovolenko of OctoNus displayed a reiteration of the presentation he and Yuri Shelementiev gave for the GRC on “Fancy-Color Diamonds:  Better Color Appearance by Optimizing Cut.”  In addition to the process of rough planning, they showed several configurations (actual and modeled in DiamCalc) under different illumination conditions to demonstrate brightness, saturation and contrast appearances.

GIA Symposium 2006

Sergey Sivovolenko

GIA laboratories’ Al Gilbertson is one of the pioneers of modern reflector technology, and among the first to develop multi-colored analysis.  In addition to discussing aspects of the new GIA cut grading system he hosted a fantastic space on “The Evolution of the American Round Brilliant Diamond.”

GIA Symposium 2006

Al Gilbertson

Another pioneer of reflector technology is Garry Holloway, who created Ideal-Scope and popularized it via the internet.  Holloway’s space proposed a plan for peer review of diamond grading labs, maintaining that unification of standards, particularly among softer labs, could improve reputability and consumer confidence in the industry.

GIA Symposium 2006

Garry Holloway

In all, nearly 100 spaces hosted experts willing to interact with symposium attendees one on one.

For more specific questions ask our experts
Live chat by BoldChat

Continue shopping at

  • Follow Us
  • Sign up for our Newsletter:
    Whiteflash rating :
    4.80 Rating based on 4251 reviews. Read all testimonials
  • Contact Us
    Give us feedback Give us feedback
    Telephone 1-877-612-6770
    Outside USA 1-832-252-6770
    2150 Town Square Pl
    Sugar Land,
    TX 77479 USA
    Winner of the 2015 BBB Pinnacle Award
    Best Jeweler in Houston, Texas

Welcome to Whiteflash!

We cordially invite our Houston area clients to visit our beautiful boutique style showroom for a very special experience. Come see our A CUT ABOVE® diamonds and designer engagement rings in person and meet our friendly and knowledgeable staff of jewelry professionals.

Book your appointment now by visiting our Showroom Page where you can schedule your visit and learn more about the special venue we have created for our Houston area clients