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Naturally Colored Diamond Blog

Tony Cathaway

Recent Posts

5 Facts About Red Diamonds

Posted by Tony Cathaway on 9/11/18 9:07 AM

Diamonds come in all shapes and sizes. When it comes to gems, the rarer, the more expensive the diamond is. Their values are based on other factors including clarity and color. Red diamonds are among the rarest stones in the world. They’re so rare in fact, that it is thought that only 30 true gem quality red diamonds are known to exist. 

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Topics: Things to Know, red diamonds, colored diamonds

Famous Blue Diamonds: The Wittelsbach-Graff

Posted by Tony Cathaway on 9/6/18 9:18 AM

In its pursuit to find the most historic diamonds of all time, Arpege Diamonds found the legendary Wittelsbach-Graff. This 31.06- carat blue diamond has become famous not just because of its size, color, or clarity, but rather for its history within European royalty.

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Topics: History, blue diamonds, Famous Diamonds, Wittelsbach-Graff

10 Facts About Black Diamonds

Posted by Tony Cathaway on 9/4/18 8:00 AM

With their vibrant colors and breathtaking beauty, fancy colored diamonds have long been the centerpiece at auctions and museums. There is one category of gem however, that is a bit less "prevalent"; pure black diamonds.

Once thought to be an ancient curse, black diamonds have an interesting history. Did you know any of these 10 facts about black diamonds?

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Topics: Things to Know, black diamonds, colored diamonds

Colored Diamonds News From August 2018

Posted by Tony Cathaway on 8/30/18 8:15 AM

The colored diamonds industry was full of updates, insights, and discover this summer. This month, we take a look at the price growth of pink diamonds, new information on the origin of blue diamonds, and some of the best auction sales in August. Without further delay, let's begin.

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Topics: Colored Diamond News

The Oldest & Most Famous Diamonds In History

Posted by Tony Cathaway on 8/23/18 9:30 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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Black Diamond Investment Guide

Posted by Tony Cathaway on 8/21/18 9:00 AM

Naturally black diamonds are among the most rare gems in the world. Whether it is an addition to your collection or looking for an alternative investment, these stones have been steadily increasing in demand. But how are they valued and how valuable are they really?

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Topics: Things to Know, black diamonds, Investing

Which Colored Diamonds Should I Invest In?

Posted by Tony Cathaway on 8/16/18 1:58 PM

After stressing the advantages of considering fancy colored diamonds as alternative investments, many of you contacted us and asked us which colored diamond category you should invest in accordance to your budget. Since this is one of our most frequently asked questions, we figured it was high time we shed some light on the matter.

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Topics: Alternative Investments, colored diamonds

How to Spot Stones That Are Not Real Diamonds

Posted by Tony Cathaway on 8/14/18 9:36 AM

While diamonds have been steadily gaining ground as powerful alternative investments, there is still great uncertainty when it comes to distinguishing them from other precious gems. In 2 previous posts, we looked at various test that can be made to assess a diamond's authenticity. These ranged from assessments that could be made from the comfort of your own home, or at a lab by an experienced gemologist.

In this article we will be testing for differences between real diamonds and cubic zirconium, white sapphire, moissanite, white topaz, and of course synthetic diamonds. Let’s begin!

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Topics: Alternative Investments, colored diamonds, Diamonds

Famous Colored Diamonds: The Sancy Diamond

Posted by Tony Cathaway on 8/9/18 7:52 AM

It feels like it’s been ages since we last covered a historic diamond, so let’s get back to it with a bang. This time we will be looking at the famous Sancy Diamond. The history of this precious Pale Yellow stone dates back to about 1570, and its believed that its discovery took place even before that. It is said that “Le Beau Sancy Diamond,” (as it is often referred to), belonged to Charles the Bold, Duke of Burgundy. Upon his passing in 1495, the gem was passed on to his cousin, King Manuel I of Portugal. 


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Topics: Famous Diamonds, Yellow Diamonds, Sancy Diamond

How to Tell if Your Diamonds Are Real: Pt.2

Posted by Tony Cathaway on 8/7/18 9:35 AM

Welcome to part 2 of our "How to Tell if Your Diamond is Real" series. In part 1, we saw how you can run some tests from the comfort of your home. While convenient, most of these test are not conclusive. If you want to be 100% certain for your diamond's authenticity, the best thing you can do is seek the expertise of a seasoned gemologist.

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So what methods do the experts use to test for authenticity, and what can we learn from them?

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Topics: Diamonds, colored diamonds, Alternative Investments