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Mining Montana Sapphires: Rock Creek

I source all of my Montana sapphires directly from the mine owners, so I have full confidence in the gems I offer.  The largest active mine in Montana is located in the Sapphire Mountains, in what is referred to as the “Rock Creek deposit,” located just west of Philipsburg, Montana.  The area is wild and […]

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The Importance of Chain of Custody

In a recent post about ethical sourcing I touched on the concept of chain of custody, and I’d like to expand on that here.  I’ll start by explaining the idea behind chain of custody: quite simply, its the knowledge of every set of hands a gem has passed through between the moment it is dug […]

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Ethical Sourcing: What does it mean?

In the image above we see people working under what looks like very difficult conditions, and indeed they are.  In the foreground we see men and women working with hand tools to turn over fresh soil, hunting for gem gravels containing precious deep blue sapphires–worth many thousands of dollars per carat when they are finished […]

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Southern California Gem Mining: Part One

  Introduction This is the first installment in a multi-part series about the gemstone mines of San Diego County, California.  I had the good fortune to spend significant time in this area in the past few years, including a period of time working underground in the Oceanview Mine, currently the only mine where there is […]

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Earth’s Treasury Joins the AGTA!

I’m proud to announce that Earth’s Treasury is now an introductory member of the American Gem Trade Association (AGTA). The AGTA is the leading professional organization for dealers of colored gemstones, pearls as well as jewelers and other industry professionals. All members must annually commit in writing to the associations code of ethics–the most stringent […]

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Photographing Gems and Jewelry

  Introduction: Photographing Gems and Jewelry I thought I’d write a post about photographing gems and jewelry, since getting excellent photos of both is crucial for my business–and takes a significant amount of my time.  It’s also a topic I frequently see discussed online.  No matter what anyone tells you, getting good photos of gems […]

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Grand Opening!

Welcome to Earth’s Treasury–your source for fine gemstones, jewelry and gem mineral specimens. Earth’s Treasury was founded in 2012 as the realization of many of my passions: gems, minerals, jewelry, photography and more.  I want provide the public with a focused collection of gems and jewelry created primarily from natural stones and materials mined from […]

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