Turquoise

Turquoise is a gemstone that is known for its distinctive blue-green color and unique, veined patterns. It is a hydrated phosphate mineral that is formed when water seeps through porous rock and reacts with copper and aluminum minerals. Turquoise has been used for centuries in jewelry-making, and is often associated with the American Southwest, where it has been a staple of Native American art and culture. 

It is also found in other parts of the world, including China, Iran, and Egypt. Turquoise is a symbol of wisdom, protection, and good fortune, and is believed to have a number of positive effects on the wearer. It is a relatively soft gemstone, with a hardness rating of 5 to 6 on the Mohs scale, so it requires special care to maintain its beauty and luster.

Actress and style icon Audrey Hepburn was known for her love of turquoise jewelry and was often photographed wearing it in her personal life. More recently, actress Emma Stone has been seen wearing turquoise earrings and necklaces at various events. Other actresses who have been known to wear turquoise include Jennifer Lawrence, Blake Lively, and Salma Hayek. Turquoise's unique color and texture make it a popular choice for jewelry, both for its beauty and its cultural significance.