CASSITERITE and FLOURITE (large cabinet)

Cassiterite, a mineral composed of tin oxide (SnO2), typically appears opaque, although it can be translucent in thinner crystal forms. Its appealing luster and various crystal faces make it a sought-after gem. Historically, cassiterite served as the primary source of tin and continues to be a vital source of this metal in modern times.

Fluorite, known as fluorspar, is the mineral variant of calcium fluoride, represented by the formula CaF2. This mineral is classified within the halide group and typically forms in an isometric cubic structure, though octahedral and other intricate isometric shapes can also be found. According to the Mohs scale of mineral hardness, fluorite is assigned a hardness value of 4, determined through scratch resistance comparisons.