Question

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

Answer 1

ruby

Explanation:

because it's ruby

Answer 2

Answer: Pink Quartz

Explanation:

Quartz. Can come on different colours like pink, white, gray, purple, black, yellow or green.

Luster means Appearance, Quartz unlike Silica, looks like glass.

Conchoidal fracture: It´s  how Quartz´s surface fractures on a smoothly curved way.

Hardness is mineral´s property of being scratched by others. Mohs scale of mineral hardness is used to classify a mineral as softer or not. In this case, quartz has a hardness of 7, that means it´s quite hard, since the scale starts in 1 and finishes in 10.