Sapphire is a mineral variety of corundum and one of the most prized gems in jewelry.
Its name derives from the Greek word sappheiros which means blue stone, it seems to derive from the Hebrew term sappir which means the most beautiful thing, and originally from Sanskrit shanipriya which means saturnian stone
The sapphire crystallizes in the trigonal system in prismatic crystals of pseudohexagonal contour and 7 has a more or less dark blue color.
Sometimes, the coloration has characteristic striped bands, of nebulous appearance, clear and rectilinear with the edges very net and alternating in darker areas, which form between them angles of 120 degrees, in other cases, there may appear areas with silky sheen and edges poorly defined,
14 июл 2024
