This is a marcasite pendant head. Marcasite (white iron pyrite) is a stone with a brass-like metallic luster. It is a stone that has the effect of making the wearer positive, removing fixed ideas, preconceptions, fears, doubts, and anxieties that get in the way of taking a new step, and giving confidence. It is recommended for those who want to increase their self-esteem and those who want to change their current situation. The size is approximately 3.5 x 5 cm. It has a delicate, American antique-like design and sparkles, but it's not too sweet, which makes it cool. There is a silver 925 stamp. It is a new, unused item.