A type of lignite used in jewelry.
El gagate, conocido por su color negro profundo, se utiliza a menudo en joyería debido a su belleza.
Jet, known for its deep black color, is often used in jewelry due to its beauty.
El gagate, con su color negro profundo, es muy apreciado en la joyería.
Jet, with its deep black color, is highly valued in jewelry.