We have developed a technological application that is unique to the precious metals market, for the purpose of determining if your bullion has been counterfeited by including tungsten, lead and other base metal alloys. This technology is completely safe and non-destructive to the precious metal, and will be effective on everything from fractional ounce coins all the way up to the full size 100, 400 and 1,000 ounce COMEX bars of gold and silver.

This technological application has been developed in response to the growing threat to the bullion community from tungsten/lead alloy adulteration. Tungsten (19.25 g/ml density) has a density nearly identical to gold (19.32 g/ml density), and lead (11.35 g/ml) will have a density very close to pure silver (10.45 g/ml). Lead can also be alloyed with lighter elements to match even closer the density of silver. The threat arises from unscrupulous individuals and possibly institutions that have been removing precious metal from the center of bullion bars and replacing it with tungsten or lead alloy. Modern computer-aided machine tools are then used to seamlessly re-smooth the surface of the bullion product to hide any trace of the theft that has just happened.

Traditionally, the use of a density calculation (mass divided by volume) has been the solution to verify the assay purity of bullion. Unfortunately the insidious use of tungsten and other alloys that match the densities of gold and silver make this test completely useless for this type of problem.

Other types of commonly available bullion verification testing include:

X-Ray Fluorescence - This is a simple surface test, and unfortunately can only analyze the surface and immediate sub-surface of the bullion product. In a situation where tungsten alloy has been hidden in the core of a bullion product, it is unlikely that this technique would successfully identify it.

Acid testing - Can only test the surface of the gold product that is exposed to the acid.

"Electronic testing" can confirm purity through electrical conductivity resistance of the surface layer of the bullion but cannot "see" the tungsten that is embedded deep in the core of the bar or coin.

Fire assay, drilling and similar techniques are highly destructive and in the case of collector coins can completely ruin their value.

Our new detection technologies are unique to the bullion market. They can detect tungsten/lead and other impurities and cavities that are hidden at any depth inside the bullion product, no matter how large or how small, and are 100% completely non-destructive and safe.

We now produce tamper-resistant holographic assay certificates with the analysis results for each item analyzed, that bear hallmark and serial number information from your bars and the results of our intensive scans. These tamper-resistant assay certificates can trade with the bullion and give both buyers and sellers a sense of real security.

We are now serving new cleints with this unique technology. Our costs are extremely reasonable and we are able to scan, analyze and certify significant amounts of precious metal per day. We are able to travel to your secure depository and warehouse locations and perform the analysis under guard and your firm's supervision.

Please contact us at info@bullionanalysis.com to let us know of your interest in our services.
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"Fortunately, avoiding counterfeit scams is now pretty easy, with the help of a company called Bullion Analysis Inc. (bullionanalysis.com) In the old days, up to about nine months ago, if you wanted to assay your gold, you had to either drill it for samples or send the whole bar out to a lab or smelter. Ugh. Bullion Analysis has a new, non-invasive technique that will detect even the recent high-quality tungsten phonies that have been floating about.
For those of you with hundreds or thousands of 400oz. institutional bars, I would put those Bullion Analysis technicians on a plane pronto."

- The Huffington Post, April 12, 2010
Recent images showing the melted interiors of a faked 100 troy ounce Englehard silver bar which has been partially melted to show deep-interior adulteration. It was cast with foreign material rods inside and a thick, pure silver outer layer, and then CNC-machined to appear to be a legitimate extruded (forged) bar. Prior to being melted for visual dissection by the owner, the surface of the bar was indistinguishable from a legitimate 100 troy ounce bullion bar. Visible surface flaws are the result of the owner's melting of the bar.
Youtube Video showing a tungsten-filled 500g gold bar discovered in Switzerland

Huffington Post article by Nathan Lewis: How to Buy Real Gold
(Mentions BullionAnalysis.com)

The Genesis of the Gold-Tungsten: The Rest of the Story, by Martin Armstrong

Tungsten Filled Gold bars Warning

101 Uses For Tungsten

Tungsten gold coins, bars big business in US

2010: Giant Gathering Storm Clouds

Gold ETF Warning, Tungsten Filled Fake Gold Bars

Chinese company openly advertising Tungsten alloy for gold substitution

Article on Tungsten/Gold and Lead/Silver Forgeries at JSMineset.com

How to Make Fake Gold Bars

Fake Gold Bars in Bank of England and Fort Knox

All That Glitters May Not Be Gold