Author Archive
Friday, April 3rd, 2009
As mentioned on the Mardon blog, hexagonal nano-diamonds are part of the evidence for the controversial theory that explains the extinction of such critters as the saber tooth cats and the wooly mammoth that occurred 12,900 years ago. The latest Nova program, entitled “The Last Extinction”, explores this subject thoroughly and will air again Sunday, […]
Tags: mass extinction, nano-diamonds
Posted in Gemstones | Comments Off on Nano-Diamonds on PBS
Tuesday, March 31st, 2009
I recently had the pleasure of appraising this interesting watch. The design first charmed and then puzzled me. At first, the straight lines and geometric shapes convinced me it was pure Art Deco, 1925-1940. The “Curvex” shape seemed to confirm that— Gruen introduced the classic men’s Curvex style shaped to fit the wrist around 1929. […]
Tags: Curvex, Edwardian, platinum wristwatch, WWI
Posted in Estate Jewelry | Comments Off on Fascinating World War I Era Wristwatch
Friday, March 27th, 2009
The results of an insurance appraisal we did recently answer this question emphaticallyThe results of an insurance appraisal we did recently answer this question emphatically. A client brought us a ring set with a large round diamond and asked us to appraise and reset this stone into another ring she owned. During the take-in procedure […]
Tags: jewelry insurance
Posted in Jewelry Services | Comments Off on Jewelry Insurance 101– Should I Insure My Jewelry?
Tuesday, March 24th, 2009
The results of an insurance appraisal we did recently answer this question emphatically. A client brought us a ring set with a large round diamond and asked us to appraise and reset this stone into another ring she owned. During the take-in procedure for any work we do, we always ask our clients for the […]
Posted in Featured Post, Jewelry Facts | 1 Comment »
Wednesday, March 11th, 2009
Check out this headline, just in from AGTA Prism—Michelle Obama’s Favorite Jewelsmith Hits New York, Paris http://www.blackbookmag.com/article/mrs-os-favorite-jeweler-sets-up-shop-on-both-sides-of-the-pond/6686
Posted in Gem Industry News | Comments Off on Michelle Obama’s favorite jeweler
Wednesday, March 11th, 2009
The saga of this unusual gem specimen has only just begun. This one will make history—the story is straight out of Indiana Jones! From the AGTA Prism, http://online.wsj.com/article/SB123578111660297983.html?mod=article-outset-box
Posted in Gem Industry News | Comments Off on 840 pound Emerald—Pounds, not Carats!
Tuesday, March 10th, 2009
For a good description of the Emeralds worn by Angelina, along with good information about all the jewels worn by the stars, check out this link http://www.agta.org/pressroom/200903-agta-newsflash.html#oscarscolors
Posted in Gem Industry News | Comments Off on Emeralds at the Oscars
Tuesday, March 3rd, 2009
I attended a meeting last November of the Orange County GIA Alumni to hear Richard Drucker speak. His firm, Gemworld International, and the AGTA Gemological Testing Center co-sponsored the Inaugural World of Gems Conference, held Sept. 2008 in Chicago. In February, we finally received Gemworld’s publication of the proceedings. Richard, publisher of the Gem Market […]
Tags: Enhancement, Gem Treatments
Posted in Gem Industry News, Gemstones | Comments Off on The Impact of Enhancements on the Value of Gems
Wednesday, February 18th, 2009
Early in my career as a gemologist, while working the gem identification counter at the GIA Gem Trade Laboratory in Santa Monica, I fell in love with Padparadscha—a gemstone, not a girl. The privilege of seeing and handling a few magnificent specimens of this magical sapphire with the glorious sunset orange and pink color was […]
Tags: Gemstone Grading, Padparadscha, Sapphire
Posted in Gemstones | 3 Comments »
Wednesday, February 11th, 2009
Recently, I re-appraised a beautiful diamond ring and had some unsettling news for my client. We had appraised this ring several years back, as is, with no documentation from the client. At the time, I could see no inclusions whatsoever at 10x in our GIA DL microscope, and the nice high color 3 ct. round […]
Posted in Jewelry Facts, Mardon Happenings | 1 Comment »