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 and Google+ pages.

The Truth About Rainbows and Gold — And How to Find Real Hidden Treasure

March 13, 2018 07:00
The Truth About Rainbows and Gold — And How to Find Real Hidden Treasure

Each year, we celebrate St. Patrick’s Day on March 17, in observation of the death of St. Patrick, a patron saint in Ireland. The day is filled with feasts, festivals, and folklore, such as the legend that a hidden cauldron of gold doubloons awaits you at the end of every rainbow.

There’s only one catch: Finding the end of a rainbow is as likely as finding a pot of free gold.

Why? Rainbows are one of nature’s greatest optical illusions — they don't actually exist in one specific spot. As a result, no two people can ever see the same rainbow, except on Instagram.

If you and your friends are looking at the same rainbow, what you see will be different than what they see, depending on your line of vision and where the source of light (such as the sun) is shining.

Rainbow tracking might not be a lucrative career venture. But there are other ways to find hidden treasure and turn it into a profit.

Manhattan Gold and Silver (MGS) buys precious metal scrap made from gold, silver, platinum, or palladium. 

Some of the items we commonly buy include: 

  • Jewelry
  • Filing dust and polishing material
  • Flatware and other antiques
  • Dental filings (gold and palladium only)
  • Industrial and manufacturing byproducts
  • Bullion

As an example, jewelers have brought in the sweepings from their workbench or old workroom carpeting. They were shocked by how much valuable material was right under their noses — no rainbow necessary.

Bring your hidden treasures into MGS today for a free estimate.



The Weather Channel
National Geographic

Silver Alloys and their Uses

March 7, 2018 07:00

Like other precious metals, silver is an amazing material with many unique properties. Its plasticity is second only to gold, it has the highest thermal conductivity of any metal, it has antimicrobial properties, and it is the most electrically conductive of all the periodic elements. With all of these fantastic properties, it's no wonder why silver has so many uses in a variety of industries.

However, it's worth noting that pure silver is not the only useful form of the metal. There are many types of silver alloys that have enhanced properties for specific applications. For example, Argentium sterling silver is an alloy containing copper and germanium that, unlike pure silver, is completely resistant to firescale (discoloration caused by heating). When Argentium silver is heated, the germanium oxidizes creating a transparent layer that protects the copper in the alloy from oxygen exposure. Without that exposure, copper oxide never forms and firescale never appears.  
In the below infographic we'll look at some popular silver alloys, what they're made of, and how they are used.

What Are Good Delivery Gold Bullion Bars?

February 28, 2018 07:00
What Are Good Delivery Gold Bullion Bars?

“Good Delivery” bars are those that meet the standards set by The London Bullion Market Association (LBMA). These rules and regulations are designed to establish quality control in the production of gold and silver bars worldwide.

The specifications for Good Delivery gold bars include:

1. Weight: The minimum gold content is 350 fine troy ounces and the maximum is 430 fine troy ounces. The bar’s gross weight should be conveyed in troy ounces and in multiples of 0.025. Always round down to the nearest 0.025 of a troy ounce. LBMA strongly suggests not stamping the weight on a Good Delivery gold bar. When bars are weighed in London by an LBMA-approved weigher, their weights may differ and their figures will be used. Any discrepancies can result in the need for an updated mark. 

2. Dimensions: The approved dimensions for Good Delivery gold bars are:

  • Length (Top): 250 mm +/- 40 mm; Undercut *: 5° to 25°
  • Width (Top): 70 mm +/- 15 mm; Undercut *: 5° to 25°
  • Height: 35 mm +/- 10 mm

*The undercut is the degree of slope on the side and ends of the bar. 

3. Fineness: For the fineness to be acceptable, it must be a minimum of 995.0 parts per thousand fine gold.

4. Marks: There are two main surfaces on a gold bar. The larger of the two (the cast surface at the top of the mold) should be marked. 

The marks on it should include:

  • Serial number
  • Assay stamp of refiner
  • Fineness (to four significant figures)
  • Year of manufacture (unless already incorporated as the first four digits in the bar number)

Appearance is also of the utmost importance. Overall, Good Delivery gold bars must be in good shape, without cavities, cracks, holes, blisters, or extreme shrinkage.

For safety reasons, the edges should not be sharp, to avoid injury when handling. They should be both easy and safe to stack.

To learn more about the requirements, please see “The Good Delivery Rules for Gold and Silver Bars” by the LBMA.

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