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The MGS Precious Metals Blog

Manhattan Gold & Silver is an industry leader in precious metal pricing and refining with more than 30 years of experience. During our time in the business, we’ve found the topic of precious metals to be a vast and interesting one. Here on our precious metals blog, we write in-depth posts about the science of precious metal refining, historical and modern uses for precious metals, market news, and much more. Subscribe to our RSS feed to stay current, and discuss the latest posts on our Facebook page.

Study Finds New Uses for Gold — Producing Hydrogen from Water

November 20, 2018 07:00
Study Finds New Uses for Gold — Producing Hydrogen from Water

Gold nanoparticles coated with a semiconductor can produce hydrogen from water at least four times more effectively than other methods, according to a new study by team members from Rutgers University in New Jersey.

The discovery could lead to better solar energy storage, increasing renewable energy use and combating climate change.

To excite the electrons in the gold nanoparticles, the researchers utilized visible and infrared light, instead of ultraviolet light, which is the customary method.

When electrons are excited, they can be transferred more effectively into the semiconductor, which accelerates the reaction.

Engineers coated the gold nanoparticles in titanium dioxide and then exposed the material to UV, visible and infrared light. Then, they studied how the electrons jumped from gold to the material.

By leveraging photocatalysis, which uses light to accelerate a chemical reaction, the engineers may have expanded the ways in which we can use sunlight for energy.


Source: Science Alert

Tin Foil Doubles as a Key Fob Guard

November 13, 2018 07:00
Tin Foil Doubles as a Key Fob Guard

Life Hack: Use Tin Foil as a Key Fob Guard

Technology seeks to simplify our lives, making everyday tasks just a little easier. Take the keyless car entry, for example. Many key fobs allow us to unlock our cars and turn on our ignitions from a distance.

However, as technology advances, so do the tactics thieves use to capitalize on it.

Now, it may be possible for car thieves to intercept the signal from your key fob using a special receiver called a “relay attack.”

Luckily, there’s a simple life hack that can prevent the signal from being transmitted — simply wrap your key fob in tin foil.

Although it may not be ideal, tin foil is the least expensive key fob guard on the market, as you can probably find some in your kitchen pantry. Made of aluminum, tin foil can help to block or shield radio frequency waves.

Tin foil can also be used to safeguard other technology, including your cell phone or tablet.

Not into the idea of wrapping your keys up like a baked potato? We get it.

You can also purchase special bags that are lined with a metallic material to prevent signals from going in or out.


Source: IFL

Fifth Largest Gem-Quality Diamond Sold for $40 Million

November 6, 2018 07:00
Fifth Largest Gem-Quality Diamond Sold for $40 Million

A 910-carat diamond from southern Africa was recently sold to an undisclosed buyer in Antwerp, Belgium, for $40 million.

The gem is a D color, Type 11A, which is the highest color and quality rating possible. It’s also the fifth largest gem-quality diamond that’s ever been discovered, according to Diamond District Monthly.

Experts estimate that it could produce 10 to 30 high-quality, smaller diamonds of varying sizes.

The diamond has been nicknamed the “Lesotho Legend” after its country of origin.

Many large diamonds have been found there, including the “Lesotho Promise,” which was 603 carats and sold for $12.4 million.

It was cut down to 26 smaller diamonds, each one as flawless as the next.


Source:

Diamond District Monthly, May 2018
USA Today

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