Charlie - morganite
" The pink color of morganite is attributed to Mn2+ ions. Morganite is pleochroic, when it is viewed down its c crystallographic axis the color is more pink. In comparison to emerald, morganite lacks inclusions and fractures. "
mohs scale hardness - 7.5-8
Aisha - cubic fluorite
" Fluorite (also called fluorspar) is the mineral form of calcium fluoride, CaF2. It belongs to the halide minerals. It crystallizes in isometric cubic habit, although octahedral and more complex isometric forms are not uncommon. "
mohs scale hardness - 4
Eleanor - rutile
" Rutile is an oxide mineral composed of titanium dioxide (TiO2), the most common natural form of TiO2. Rarer polymorphs of TiO2 are known, including anatase, akaogiite, and brookite. "
mohs scale hardness - 6-6.5
Vivian - chrysoberyl
" The mineral or gemstone chrysoberyl is an aluminate of beryllium with the formula BeAl2O4. The three main varieties of chrysoberyl are: ordinary yellow-to-green chrysoberyl, cat's eye or cymophane, and alexandrite."
mohs scale hardness - 8.5
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