Jewelry Auctions & 2015 Reader’s Choice Voting

May 22nd, 2015 by James L. Sweaney, CGA, FGA. GG


Mardon has placed a rare vintage watch for a client in this upcoming Important Watch Auction held at Sotheby’s New York venue. It’s Lot # 163, page 136 – you can browse the catalog at this URL,

This last year, we’ve added Jewelry Auctions to the list of services available through our extensive network of experts and colleagues. Many of our clients have expensive jewelry items they wish to sell for various reasons– for example, they have an inheritance that needs to be divided, they have pieces no longer worn or they simple want to raise cash. While Mardon buys all types of fine jewelry for cash, sometimes a high end item can only be properly valued thru an active market like auctions.

Auctions can be intimidating, especially to a person with no experience selling thru an auction. Auction houses charge fees for shipping, insurance, publication and promotion, and a commission based on the hammer price. Mardon has connections with such fine auctioneers as Sotheby’s and Christie’s. We can sell your jewelry through the appropriate auction for fees similar to what you would pay if you did all the work of estimating, shipping and insuring yourself. We’ll help you decide if selling your pieces thru an auction is the appropriate choice. No worries, no trips out of town, and you’ll be dealing with a local business established in our community since 1961.

Just a friendly reminder – Voting in the 2015 Reader’s Choice survey ends soon. If you’d like to be counted, it’s easy to do– just click on the red banner on the Mardon Jewelers Home Page,, — it will take you right to the Press Enterprise online ballot. You don’t have to complete all the categories, just the ones you want. It only takes a bit of time and you’ll enjoy giving recognition to the restaurants, shops, and entertainment venues that are important to your life.

So, please, check out the ballot in the Wednesday and Sunday Press Enterprise– look for Best of Inland Empire 2015. Better yet, vote on line at

We hope you’ll send a little love our way –  We work hard to bring you the very best in jewelry and to provide the expert services you need. We depend on your support and patronage to sustain our very small business. Thank you

Emerald Show Going On Now

May 5th, 2015 by James L. Sweaney, CGA, FGA. GG

Now showing- a Stellar Collection of Emerald Jewelry from our good friends at AG Gems. If you’ve ever wanted to see what an outstanding Natural Emerald looks like, this your chance. Stop by our shop – we’ll show you beautiful rings, earrings and a fabulous necklace, set with fine Emeralds from Colombia and  Zambia. These items have gemological certifications from GIA or AGL, so you’ll know for certain what the gemstone is.

Em Neck 2


Colombia is the most well known source of fine emeralds. The fabulous Muzo Mine of Colombia dates back to the time of the Spanish Conquistadores and before. At their best, Muzo Emeralds can show the classic slightly bluish soft green color for which emeralds are famous. Our 5.88 ct. gem is the perfect emerald color, and comes with an AGL certification.

I-23910 3:4

Magnificent 5.88 ct Muzo Emerald


3.47 Zambian Em, .81 d ring

3.47 ct. Zambian Emerald

This beautiful 3 stone ring centers on a stunning 3.47 ct. oval Emerald from Zambia, flanked by a matched pair of half moon shaped diamonds. The earrings feature 3 matched pairs of Zambian stones. Zambian emeralds are known for their deep color and excellent clarity.


7.19 ct em earrings

Zamibian Emeralds total 7.19 cts

Stop by and chat with our gemologists– we love show and tell, especially with extra fine gems. These items have gemological certifications from GIA or AGL– You’ll see the difference quality makes and we’ll explain the factors that make fine Emeralds one of the most sought after of all  gems.

We’re open Tuesday thru Saturday, 10 am to 5:30 pm.


Reader’s Choice 2015

May 2nd, 2015 by James L. Sweaney, CGA, FGA. GG

The annual Press Enterprise 2015 Reader’s Choice voting is going on now! Balloting lasts May 1 to May 31. It’s easy and fun to name your favorite shops, restaurants and entertainment venues. Your vote is important because it informs our community about the best choices  for shopping, entertainment and services. To vote online, go to

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Award Winning Gemcutters at Mardon

February 19th, 2015 by James L. Sweaney, CGA, FGA. GG

Mardon Jewelers has a new relationship with two of America’s finest gem cutters, John Dyer and David Brackna. We met both of these award winning artists at this year’s Tuscon Gem show and were able to purchase fine examples of their work.  We’ll soon be showing these wonderful gemstones in our unique Mardon Original Jewelry.

John Dyer is a master gemstone cutter known worldwide for his artistic creations and his passion for precision. He’s won 37 AGTA Cutting Edge Awards including 9 first place prizes. John’s work is truly exciting and his taste and selection of materials are wonderful. Each of his gems is etched with his logo so you’ll know it’s a genuine Dyber gemstone. You can visit his website to see a catalog of his work.

I-24741 Gypsy Rose Garnet Face 2

I-24741 Zig Zag Cut 1.96 ct Gypsy Rose Garnet

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Black Friday Diamond Deals

January 8th, 2015 by James L. Sweaney, CGA, FGA. GG

AGS logo

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 which in any way is not the truth or has the intent to be misleading. 

2. Following a policy of regularly selling merchandise at prices lower than those at which it is marked or conducting repeated discount sales and discount promotional events as an on-going policy. 

3. Advertising or setting artificially high prices as the “regular price” to allow either a fictitious sale price or supposed discount “mark down” lower than the original price. 

Not only are we committed to fair pricing and ethical business practices, we’re also dedicated to consumer protection and education. One of the main reasons we decided to invest our time and energy publishing this blog is to offer our readers and clients quality information about both the good and the bad in our industry.

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Antique Jewelry Stars In Costume Drama

November 15th, 2014 by James L. Sweaney, CGA, FGA. GG

Antique splendor

We had a visit from one of our favorite clients, Chris, his wife Jaybee, and friends, on their way to a special event celebrating the Riverside Dickens Festival. We were pleased to see Jaybee wearing the exquisite antique necklace Chris recently acquired from Mardon. This necklace is one of the finest examples of Edwardian jewelry it’s been our pleasure to offer.

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EGL Graded Diamonds– Banned from Polygon and Rapnet

September 20th, 2014 by James L. Sweaney, CGA, FGA. GG

The Polygon Trading Network, an online buying/selling service for the diamond trade, announced the latest bombshell in the EGL Diamond Grading scandal. They will no longer list diamonds with European Gemological Laboratory International (EGL) reports. This follows in the wake of the decision by another trading network, RapNet, to ban all EGL report for it’s network.

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Readers Choice Best Jeweler 2014- Mardon!

September 6th, 2014 by James L. Sweaney, CGA, FGA. GG

We’d like to thank our loyal customers for choosing us for the sixth year in a row as the Press Enterprise Reader’s Choice Best Jeweler. We truly appreciate your votes and your confidence in our small but mighty enterprise. The annual Reader’s Choice supplement will be published in tomorrow’s Sunday Press Enterprise. Read the rest of this entry »

Padparadscha or Not- What’s in a Name?

September 3rd, 2014 by James L. Sweaney, CGA, FGA. GG
Pad 3-4 for sure

2.33 ct. Padparadscha Sapphire, Mardon ring

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.

We do this two ways. First, we keep our gemological skills up to date by yearly testing and by following trade publications and scientific journals. We know what we are talking about.

We work diligently to give our customers good information so that they know and understand what they are buying. The following is an example of the subtle differences that can make a big difference to the consumer.

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OOAK Benitoite & Platinum Engagement Ring–Strictly Custom

July 29th, 2014 by James L. Sweaney, CGA, FGA. GG

Benitoite 3:4 blog

Just back from the shop, this stunning Benitoite & platinum engagement ring was made to order for our client R. This young man truly went the extra mile to create this symbol of his love for his fiancé.

Wanting something beautiful, exotic and rare, he chose Benitoite. Our California State Gemstone is all of that. One of the rarest of all the gems used in jewelry, Benitoite is found only in one small mining area in San Benito County, California. Benitoite is famous for its beautiful blue color and its flashes of rainbow colors.

He’d read our blog about a Benitoite engagement ring and contacted us, looking to acquire a nice Benitoite. We showed him several stones from our contacts in the gem trade, but they weren’t “The One.” A diligent researcher, he found a lapidary in Central California who cuts this rare gem. R. drove hundreds of miles to a gem show to meet this cutter where he was able to purchase this beautiful triangular step cut stone.

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