The heating treatment in the presence of fluxing materials

The proportions of the drop are not fully respected

with 8 Amethysts "around"

Il colore di fondo non è unforme: la gemma appare bicolore

the structure that remains is of infinite beauty

Rubino grezzo 9,35 ct Torchon The heating treatment in theThe gem appears included when observed with a 10x lens: the central area of the crystal, called core, is visible, darker. This is a characteristic of some rubies, which are found in the Mogok Valley in Burma and more precisely from the Mong Hsu mine. This peculiarity does not strictly identify the place of origin. The heating treatment in the presence of fluxing materials, in which the rough stones are immersed, is the cause of the glassy appearance