Posts Tagged ‘GIA’

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 […]

Antique Jewelry Gets TLC

Friday, July 3rd, 2015

  We just acquired four wonderful antique and vintage rings which are, as they say, “Farm Fresh.”  It’s often the case that estate pieces need TLC before they can be resold– they’ve been worn and loved for years! They’ll need restoration, refurbishing and GIA certifications to meet our standards for resale to our clients. Here’s what we do to bring these lovely pieces […]

Padparadscha or Not- What’s in a Name?

Wednesday, September 3rd, 2014

One of the problems we encounter in the gem trade is misrepresentation to add value to gems. As aficionados of fine gemstones and as members of the American Gem Society and the American Gem Trade Association, we believe it’s important to conduct our business by a strict code of ethics and to protect our customers from fraud and false advertising. […]

Imitation Gemstones– Buyer Beware

Saturday, November 9th, 2013

A client brought these three stones to our shop looking to sell them. She had purchased the stones while traveling and was under the impression the two 30 ct. greenish blue ones were aquamarines and the peachy pink stone was morganite. At Mardon, as gemologists, we always buy gems very carefully and only when we […]

Padparadschas R Us – Rare Gems Are Our Specialty

Wednesday, May 1st, 2013

We’ve always loved the ultra rare variety of fancy sapphire known as the Padparadscha. Early in my career, working in the gem indentification labs of GIA, I had the opportunity to see a few good examples of the natural Padparadscha Sapphire and to learn the subtle distinctions that make this gem so desirable. Our informational blogs about […]

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.

A New Member of the National Association of Jewelry Appraisers

Wednesday, June 20th, 2012

I’m proud to announce my membership with the prestigious National Association of Jewelry Appraisers (NAJA). NAJA is a dynamic organization that focuses on the development of professional jewelry appraising thru advanced professional education and training as well as promoting high ethical standards. Their mission dovetails well with our longstanding relationship with the Gemological Institute of […]

Mardon Introduces FireMark to the Inland Empire

Wednesday, May 30th, 2012

Mardon is proud to introduce the FireMark Princess Diamond to our community. We know this very special diamond will quickly make fans because of it’s outstanding beauty and value. A recently granted U.S. Patent protects the unique features that separate FireMark from all other Princess cuts. A true gemological breakthrough, FireMark’s innovative cutting results in unprecedented […]

Repairing Broken Hearts and Broken Diamonds

Saturday, September 3rd, 2011

  Our client sadly thought this family heirloom .96 ct. Old European cut diamond had little or no value– after years of wear, it had been cherished almost to death and looked like it had been through the garbage disposal. Mardon to the rescue! A close inspection in our gemological microscope revealed that while the […]

Who can call himself a jewelry appraiser?

Thursday, May 12th, 2011

This headline caught my eye in a recent email— the answer to this trick question is anyone! A newsletter by an insurance industry organization highlighted the fact that there are no federal or other governmental bodies setting qualifications for who may be a jeweler or a jewelry appraiser. A study by a related group also […]

Member - American Gem Society Member - American Gem Trade Association Polygon - The Jewelers Information Highway Harmony Recycled Precious Metals Firemark Diamonds