Améthyste, quartz - Paire Calcédoine / Chalcedony Color: Dark gray and gold

Color: Dark gray and gold

brown and black

then the complement color (the secondary colors which are superimposed on the base color)

Dimensions: 40

When it is more included

Améthyste, quartz - Paire Calcédoine / Chalcedony Color: Dark gray and goldAmethyst is the purple variety of crystalline quartz. Its dark purple to light purple color is due to the presence of iron (Fe). This is the birthstone for the month of February. This fine stone (sometimes referred to as semi precious) is undoubtedly the most popular quartz. Amethyst, which once competed with the finest gemstones, became affordable in the early 19th century when significant deposits were discovered in Brazil. Variety: Quartz Purple