Posts Tagged ‘American Gem Society’

The Mardon Way- Fine Gems

Wednesday, May 17th, 2017

Mardon has developed its reputation as a fine jeweler by creating its own way of doing business. The Mardon Way is based on our passion for fine colored gemstones. Because we love the richly colored treasures that Mother Nature has created for us, we’re dedicated to setting these fine colored gemstones into beautifully made pieces […]

Rolex Counterfeit- Fauxlex

Wednesday, July 15th, 2015

One of most commonly counterfeited items on the planet is the Rolex sport watch– we call them “Fauxlex”. Here’s a counterfeit of the Rolex Ladies DateJust that we recently examined. Our first impression was that it was not genuine- the outer bezel is set with low quality diamonds and looks out of synch with the dial– […]

Black Friday Diamond Deals

Thursday, January 8th, 2015

As members of the American Gem Society, we at Mardon Jewelers are committed to conducting our business ethically. Key tenets of the AGS are that the ethical business person never knowingly misrepresents the facts or intentionally deceives other parties. From our AGS Membership Manual, these are the first 3 of 15 specifically prohibited business practices. 1. Advertising […]

Antique Yogo Sapphire Pin

Saturday, March 8th, 2014

A client inherited this gorgeous antique Yogo Sapphire pin and asked us to appraise it. Sapphires were known to occur in several areas of western Montana as early as 1865. For the most part, these deposits produced only moderately good sapphires. The discovery of sapphires in Yogo Creek was different. In 1895, famed gemologist G.F. […]

Topaz or Not Topaz? That is the Question!

Thursday, November 15th, 2012

One of the missions Robert M. Shipley defined when he created the Gemological Institute of America was to rectify incorrect practices in the jewelry and gem business. One of the most common of these is the use of trade names and misnomers for gemstones.

Restoring the Ring of GIA founder Robert M. Shipley- A Father’s Legacy

Saturday, June 12th, 2010

We thought this would be a great post the week before Father's Day. Often at Mardon Jewelers, we're asked to perform an expert service by a client. Such was the case recently when we restored the ring that originally belonged to Robert M. Shipley, the founder of GIA. Early in his career, Mr. Shipley realized […]

Gemology 101- How to Grade Colored Gems

Wednesday, June 9th, 2010

Finally, after much hard work and thought, we've launched, or rather relaunched our Mardon Colored Stone Grading System. Last year we posted most of this system along with our Gallery of Gems, but were never really satisfied with the format. Our excellent local internet consultants, Frye/Wiles, suggested a more internet-friendly way of presenting the system […]

Recertification Blues – Passing the American Gem Society Annual Exam

Sunday, December 14th, 2008

Every year in the fall, I receive the materials to prepare for my annual recertification exam.  Sigh!  All titleholders in the American Gem Society are required to pass an examination of skills and gemological knowledge annually.  The AGS hosts yearly conclaves around the USA, in which seminars and classes present the latest information on gemology […]

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