And now for something completely different. What I want to show you is a very rare geological freak of nature.
The photos are of a natural, unheated, untreated sapphire from Mogok, Burma. I bought this stone some years ago and keep it in my collection. Gem photography is notoriously difficult dealing with the effects of light in a 3 dimensional object. Reflection, refraction, dispersion, saturation and angle of incidence. Mogok produces the finest Ruby and Sapphire in the world. Always has. Gems have been mined there since antiquity and were mentioned by Marco Polo in his "Travels" 800 years ago. Paleolithic tools have been found there. A natural untreated Mogok Ruby of 7.04 carats just sold in Hong Hong for $2,979,128 U.S Dollars, or 430,000 Dollars per carat. Whoa.
There are stones which change in color in different sources of light. Royal blue in florescent daylight changing to a reddish violet under incandescent electric light. These stones are known as change of color Sapphires. This stone however is 2 colors in any light. It is properly called a bi-colored Sapphire. The stone was bought in Mogok by a gem dealer friend of mine in the rough directly from the muddy earth. He is an expert cutter and cut this stone in a cushion shape to exhibit the rich blue edges with a pinkish purple stripe down the center. It is as you can see from the certificate 3.62 carats. Gem dealers who have seen this stone say that in all of their years in the gem business they have never come across such a rare stone as this, half Sapphire and half Ruby. A true gemological freak.