The Underwood Diamond

This journey begins in a diamond cutter’s office with our inspection of rough diamonds, partially faceted diamonds and fully finished cut diamonds.  First and foremost, diamonds are inspected for the quality of how they are cut.  Underwood’s Certified Gemologists, C. Clayton Bromberg and R. Michael Richards, are the only diamond buyers known by the diamond-cutting community to use the Angular Spectral Evaluation Tool (ASET) which allows the viewer to evaluate a diamond’s light performance.  Once diamonds are selected for their quality of light performance they are sorted two more times:  first for color and second for clarity.  Underwood’s exacting standards are then verified by one of two diamond grading laboratories:  The Gemological Institute of American (GIA) or the American Gem Society Laboratory (AGSL).  At this point these diamonds are sent to Jacksonville for final examination in our own American Gem Society (AGS) Accredited Gem Lab.

Once in our store the diamonds are cross-checked by both gemologists again.  This confirmation of quality includes actually measuring for light performance using a computerized non-contact optical scanner that employs AGS performance grading software (measuring all nine factors that determine beauty in a diamond).  Next, the diamond is color graded against color grading master diamonds and clarity graded using a binocular microscope.  If the diamond measures up to the Underwood standards for light performance, color and clarity, it will be purchased for our inventory.

Round diamonds are then sent to the American Gem Society Diamond Grading Laboratory to have an actual Diamond Quality Certificate issued.  These diamonds will be microscopically laser inscribed on the girdle with the Underwood’s name and the unique serial number that relates back to the numbered certificate.  This Diamond Quality Certificate is an actual guarantee of the quality of that diamond by the American Gem Society, the American Gem Society Laboratory, and Underwood’s.

If you wonder why we go to these extremes to purchase a diamond for our inventory, our answer is that we want every Underwood diamond to be brighter and more beautiful than any other diamond.  We don’t leave this to chance; we use science to make it happen, employing every weapon in the gemological arsenal to make sure our diamonds are beautiful.

Starting with our visit to the office of a diamond cutter and ending in our Accredited Gem Lab, we reject an average of 95 out of every 100 diamonds placed before us to purchase.  We take great pride in the distinction an Underwood diamond gives to the wearer, setting her apart.

“Underwood’s may be the most discriminating diamond buyer in the United States.”  

- Moshe Klein, Julius Klein Diamonds