What mineral is this? Egg-sized piece. Transparent pink color with glassy luster. Shows conchoidal fracture. The hardness is 7.

Chemistry · Middle School · Sun Jan 24 2021

Answered on

Based on the provided description of an egg-sized piece with a transparent pink color, glassy luster, conchoidal fracture, and a hardness of 7, the mineral is likely to be morganite.

Morganite is a variety of the mineral beryl, and its pink color is attributed to the presence of manganese. It is valued as a gemstone and is known for its beautiful pastel shades of pink to peach. The hardness of 7 is consistent with the hardness of beryl minerals. Keep in mind that gemstones can vary, and other minerals may exhibit similar characteristics, so additional testing or consultation with a mineralogist could provide more certainty.