Mr. Al Gilbertson displayed a multi colored variation of a Fire Scope™ at the proceedings of the 1999 GIA Symposium. This device uses different colors to indicate the origin of illumination …

Learn what they mean so you can find the perfect diamond. Before investing in a diamond, know who's rating the quality. Each grade difference means big money. Be sure your diamond is …

Al Gilbertson, Benjamin Gudlewski, Mary Johnson, George Maltezos, Axel Scherer, and James Shigley. A new microlithography process developed to create high-resolution diffraction grating …

2022年11月14日 · Al Gilbertson, who was a consultant to Diamond Profile Lab, trademarked his Gilbertson Scope in 2001, which was then assigned to 8 Star, and ultimately sold to AGS, …

Below shows a Super Ideal Cut diamond that is cut to maximum brilliance, striking a fine balance between brightness and contrast. The ASET Scope image shows dominant red areas with …

2011年5月3日 · Gilbertson worked on the GIA diamond cut grading system that was introduced in 2006. His research focused on the identification of visual aspects of diamond appearance and …

2019年5月8日 · The ASET (Angular Spectrum Evaluation Tool) is a cut quality assessment scope for round diamonds. Its translucent cone and magnifying lens create a structured light …

The Ideal Scope is a cut quality assessment tool for round diamonds. Its hot pink cone and magnifying lens creates a structured light environment that reveals areas of brightness, …

By color-coding light entering the crown of the diamond he was able to track the amount of light returned properly to the viewer's eye. Over the next 30 years other innovators developed such …

Interpreting an ideal scope image is fairly simple and is a key indicator of the diamond’s ability to return light and other aspects of the diamond’s cut quality and symmetry. This reference chart …