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Naturally Colored Diamond Blog

Tony Cathaway

Recent Posts

What Does the “Restart” Look Like for Pink and Other Colored Diamonds?

Posted by Tony Cathaway on 4/24/20 4:29 PM

As the world tries to navigate through the pandemic, there is a raging debate occurring between maintaining health and restarting the economy.

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Topics: Colored Diamond Investment, Investing

Business Crises and Pink Diamond Prices

Posted by Tony Cathaway on 4/3/20 3:32 PM

Oil prices, the Coronavirus, and stock market fluctuations have the global financial market in a current state of turmoil. While this is indeed concerning, things always get worse before they get better, as they say. We need to remain calm and positive until all this rolls over. But what you currently might be thinking as investors is “how can I secure my wealth?”

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Green - The Color of March Investment Collectibles

Posted by Tony Cathaway on 3/6/20 12:29 PM

It's March, which means it's the month we celebrate both March Madness and everything green. 

So, what better way to celebrate that then to share insight around one of the most famous green basketball ball cards in history, and green diamonds.


Did you know there are common high dollar features between green diamonds and a specific "green basketball investment collectible?" Actually, the green basketball investment collectible is one of the most valuable basketball cards of all time, and is none other than the famous 1997 Michael Jordan Metal Universe Precious Metal Gems Green (PMG)  card. 

What are these commonalities? 

There are quite a few actually. They are both extremely rare, and can reach extremely high value in the right circumstances. But they have something else, a far more “physical” similarity.


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Topics: Green diamonds

Pink Diamonds: The Mickey Mantle of the Colored Diamond World

Posted by Tony Cathaway on 2/7/20 5:36 PM

Scarce. Webster defines it as deficient in quantity or number compared with the demand; not plentiful or abundant.  The old cliché says the only thing scarcer than scarce are “hen’s teeth.”

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Topics: pink diamonds, Argyle Mine

Our Top Alternative Investment Picks for 2020

Posted by Tony Cathaway on 1/16/20 2:29 PM

2020 ushers in not only the dawn of a new decade but a significant shift in the supply of the naturally colored diamonds with the closing of the iconic Argyle Mine.  The one certainty to expect is that investment portfolios are going to be changing; which raises a question, “how are they going to change?” In this article, we’ll share insight highlighting top alternative investment ideas.

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Topics: Alternative Investments, pink diamonds

5 Facts About Red Diamonds

Posted by Tony Cathaway on 1/1/20 11:28 AM

When it comes to colored diamonds, the biggest determining factor of their value is their rarity.

Red is the rarest diamond color in the world. It's so rare in fact, that it is thought that only 30 true gem quality red diamonds are known to exist. 

In this article we will be answering the 5 most asked questions about red diamonds:

  • Why are red diamonds red? 
  • Which is the most expensive red diamond in the world?
  • Which is the largest red diamond in the world?
  • How much are red diamonds worth?
  • Where are red diamonds found?

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Topics: Things to Know, red diamonds, colored diamonds

Are Green Diamonds for Investing or Collecting?

Posted by Tony Cathaway on 12/11/19 10:06 AM


This post has been updated for 2019

While natural green diamonds are exceptionally rare, they have often been outperformed by their red, blue, and pink counterparts, mainly because of color preference. This “underestimation” if you would, often led to green diamonds having fewer appearances in auctions, and were viewed as stones that mostly appealed to collectors rather than serious investors.

But how does that statement hold today? Are green diamonds still only sought after collectors and gem enthusiasts or are they starting to turn the heads of more serious investors?

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Topics: Colored Diamond Investment, green diamond, Diamond Investing, Natural Green Diamond

The World's Most Famous Green Diamonds

Posted by Tony Cathaway on 12/4/19 9:56 AM

Natural green diamonds are among the rarest colored diamonds in the world. In fact, only few true investment grade green diamonds have ever been discovered, Those which made their way to the auction block not only managed to shatter price records, but also mesmerized audience with their beauty.


Without further delay let's look at the most famous and valuable green diamonds in the world. 

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Topics: green diamond, Aurora Green Diamond, Ocean Dream Diamond, Dresden Green Diamond, Natural Green Diamond, Gruosi Green Diamond

GIA Report: What You Need To Look For

Posted by Tony Cathaway on 11/27/19 10:26 AM

As diamond enthusiasts, collectors, and investors, it's only natural you want to know that you're getting exactly what you paid for. It's therefore a smart choice to always request for, and verify the authentication of your diamond’s GIA certificate upon purchase.

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Topics: Things to Know, Alternative Investments, colored diamonds, GIA

The Oldest & Most Famous Diamonds In History

Posted by Tony Cathaway on 11/20/19 9:46 AM

About five thousand years ago, diamonds were first mentioned in ancient writings. The first diamonds were gathered from alluvial deposits in Indian rivers and streams, and the diamond trade dates from that time. Fast forward to 1871, the first year that over one million carats of diamonds were mined. While most people associate diamonds with perfectly clear stones, colored diamonds are some of the oldest and most famous diamonds in history. 

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Colored Diamond Insights

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The world of naturally colored investment diamonds and jewlery is fascinating! 

Auction prices hitting new heights, stars and entertainers wearing new fancy colored diamonds, and backstories on some of the most iconic colored diamonds of all time. 

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