Tag Archives: rough


Photocourtesy of Charles Merguerien.
Photocourtesy of Charles Merguerien.

Art? A primitive map showing a mountain range? High-precision laser inscribing? Nope! Just one of the many natural beauty marks of rough diamonds. These close-ups are as beautiful as the pictures in my “Opals in October” post. I would fill my walls with large-scale reproductions of these, they are so fabulous!


Trigons are triangular growth patterns that appear on diamond rough. Oriented in the opposite direction of the gemstone’s octahedral face, these marks were etched into the diamonds as they formed by extremely hot fluids, far below the earth’s surface.


RoughPic copy