https://en.wikipedia.org/wiki/Eilat_stone
Eilat Stone (Hebrew: אבן אילת) is a gemstone that derives its name from the city of Eilat in Israel, where it was once mined.It is characterized by a green-blue heterogeneous mixture of several secondary copper minerals, including malachite, azurite, turquoise, pseudomalachite, and chrysocolla.Eilat stone is the national stone of Israel, and is also known as the King Solomon …