Minerals — Heliodor

Heliodor, also known as golden beryl, is a light to medium yellow variety of the mineral beryl. Beryl is a silicate mineral that contains both aluminum and beryllium. It typically forms in pegmatites, which are coarse-grained igneous rocks that form from the slow cooling of magma.Heliodor gets its yellow color from the presence of iron impurities in the crystal lattice structure of the beryl. The intensity of the color can vary depending on the amount of iron present, with some specimens being a pale yellow and others being a deep golden yellow.Heliodor has a hardness of 7.5-8 on the Mohs scale, which...