The choice of what to write on this page finds it roots in surfing the internet. There are many parts of the saga of tourmaline that I could not care less about, whether they are true or not. My indifference to tourmaline’s mystic and health issues keeps me from...
Tourmaline is not the most dichroic gemstone of all gemstones or in fact intrinsically dichroic at all. I prefer to use dichroic rather than pleochroic because tourmaline can only express two colors in a crystal that are based on different axis of the crystal. I...
When Paraiba from Brazil first hit the market in the late 1980s and was accepted as a natural beauty, many attempts were made to stretch English to express the wonderment of its beauty. Its hue/color was compared to Windex blue, electric blue etc. and its visual...
In this post I will limit myself to a simple truth that has not been picked up by the internet and how it continues to propagate an older theory of color change that CAN NOT BE TRUE. I will not write about the proposed theory of why color change occurs in gemstones,...
On this page I will present my observations on color change in tourmaline. I will be covering the following four spectral areas of change, red to orange, yellow/brown to green, green to blue, blue to purple (Laurellite). The last one is a recent discovery, since the...
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