Posts Tagged ‘GIA’
Saturday, September 1st, 2018
Results are in for the 2018 Reader’s Choice Survey by the Riverside Press Enterprise. Thank you, our loyal fans and supporters — You’ve done it again! Mardon Jewelers has been voted the Best Jeweler of the Inland Empire for the Tenth Year in a Row! This last year has been a time of growth and […]
Tags: GIA, laboratory grown diamonds, natural blue diamonds, Reader's Choice 2018, synthetic diamond
Posted in Estate Jewelry, Gemstones, Jewelry Services, Mardon Exclusive Jewelry, Mardon Happenings | 1 Comment »
Saturday, March 3rd, 2018
Mardon Jewelers just acquired the latest diamond testing device from the Gemological Institute of America, the GIA iD100. This desktop instrument uses spectroscopic technology to separate synthetic and imitation diamonds from natural diamonds. The GIA iD100 was developed to inform and protect both jewelers and consumers. Because of recent technological advances, laboratory grown diamonds are […]
Tags: diamond simulants, GIA, iD100, imitation diamonds, lab grown diamonds, spectroscopic technology, synthetic diamond, Type I diamonds, Type II diamonds
Posted in Featured Post, Gem Industry News, Gemstones, Jewelry Services | Comments Off on GIA iD100 Diamond Tester at Mardon Jewelers
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 […]
Tags: AGS, AGTA, Alexandrite, American Gem Society, American Gem Trade Association, Benitoite, David Dyer, GIA, Imperial Jade, Lightning Ridge Black Opal, Padparadscha, paraiba tourmaline, Spessatite Garnet, spinel
Posted in Estate Jewelry, Gemstone of the Month, Gemstones, Jewelry Services, Mardon Happenings | Comments Off on The Mardon Way- Fine Gems
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 up […]
Tags: Antique Cushion, antique jewelry restoration, GIA, GIA cert, jewelry renovation, Marty Guptill
Posted in Estate Jewelry, Featured Post, Gemstones, Jewelry Facts, Jewelry Services | Comments Off on Antique Jewelry Gets TLC
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. […]
Tags: AGL, AGS, Cornflower Blue, GIA, Gubelin, kashmir sapphire, Padparadscha, pigeon's blood ruby, pink sapphire
Posted in Custom Jewelry, Featured Post, Gemstone of the Month, Gemstones, Jewelry Facts | Comments Off on Padparadscha or Not- What’s in a Name?
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 […]
Tags: AGS, AGTA, Aquamarine, birefringence, Certified Gemologist Appraiser, double refraction, gemology, genuine gemstone, GIA, Glass, imitation gemstone, John Koivula, Morganite, Photoatlas of Inclusions in Gemstones, Synthetic Quartz
Posted in Featured Post, Gemstones, Jewelry Facts, Jewelry Services | Comments Off on Imitation Gemstones– Buyer Beware
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 […]
Tags: CAD/CAM, Custom Jewelry, gem trade, GIA, Natural Padparadscha, Padparadscha, pink gold, rose gold
Posted in Custom Jewelry, Featured Post, Gemstone of the Month, Gemstones, Jewelry Services | Comments Off on Padparadschas R Us – Rare Gems Are Our Specialty
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.
Tags: American Gem Society, citrine, FTC Guidelines, GIA, Imperial Topaz, Robert M. Shipley, trade names
Posted in Featured Post, Gem Industry News, Gemstone of the Month, Gemstones, Jewelry Facts, Jewelry Services | Comments Off on Topaz or Not Topaz? That is the Question!
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 […]
Tags: FireMark, GCAL, GIA, Light Return, octahedron, Princess, U.S. Patent No. 8181482
Posted in Featured Post, Gem Industry News, Gemstones, Jewelry Facts, Mardon Happenings | Comments Off on Mardon Introduces FireMark to the Inland Empire
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 […]
Tags: Antique Cushion, Diamond Grading, GIA, Old European Cut, recutting diamond, recutting emeralds, Ruby, Sapphire
Posted in Estate Jewelry, Featured Post, Gemstones, Jewelry Facts, Jewelry Services | Comments Off on Repairing Broken Hearts and Broken Diamonds