diaphaneity
21Kyanite — General Category Silicate mineral Chemical formula Al2SiO5 …
22Mineral — For other uses, see Mineral (disambiguation). An assortment of minerals. A mineral is a naturally occurring …
23Muscovite — For other uses, see Muscovite (disambiguation). Muscovite Muscovite with albite from Doce valley, Minas Gerais, Brazil (dimensions: 6×5.3×3.9 cm) General Catego …
24Quartz — This article is about the mineral. For other uses, see Quartz (disambiguation). Quartz Quartz crystal cluster from Tibet General Category …
25Spinel — General Category Oxide minerals Spinel group Chemical formula MgAl2O4 …
26Talc — magnesium silicate redirects here. For the synthetic form, see synthetic magnesium silicate. Talc Three pieces of Talc. General Category Silicate mineral …
27Rutile — Wine red rutile crystals from Binn Valley, Switzerland (Size: 2.0 x 1.6 x 0.8 cm) General Category Oxide minerals …
28Ruby — This article is about the mineral. For other uses, see Ruby (disambiguation). Ruby Natural ruby crystals from Winza, Tanzania General Category …
29Fluorite — General Category Halide mineral Chemical formula CaF2 …
30Chalcedony — A cut and polished Chalcedony geode General Category Oxide mineral Chemical formula …
