Améthyste, quartz Prasiolite Tiger's Eye is a variety

Tiger's Eye is a variety of quartz often used in jewelry and art objects

golden and blue

Moonstone is arguably the most popular stone of its group (feldspars)

Ametrine is a natural variety of quartz

Améthyste, quartz Prasiolite Tiger's Eye is a varietyAmethyst 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