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Agate /ˈæɡət/ is a cryptocrystalline variety of silica, chiefly chalcedony, characterised by...
Amazonite (sometimes called "Amazon stone") is a green variety of microcline feldspar.The...
Amethyst is a violet variety of quartz often used in jewelry. The...
Amethyst is a purple variety of quartz (SiO2) and owes its violet...
Ametrine, also known as trystine or by its trade name as bolivianite,...
Andalusite is a common metamorphic mineral which forms under low pressure and...
The mineral was named apatite by the German geologist Abraham Gottlob Werner...
Aquamarine (from Latin: aqua marina, "water of the sea") is a blue...
The name beryl is derived (via Latin: beryllus, Old French: beryl, and...
Cacoxenite is an iron aluminium phosphate mineral with formula: Fe3+24Al(PO4)17O6(OH)12·17(H2O).[3] It is...
Calcite is a carbonate mineral and the most stable polymorph of calcium...
Carnelian (also spelled cornelian) is a brownish-red mineral which is commonly used...
Chrysocolla is a hydrated copper phyllosilicate mineral with formula: Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (x<1)[1] or...
Chrysolite
Chrysoprase, chrysophrase or chrysoprasus is a gemstone variety of chalcedony (a cryptocrystalline...
Cianite is a typically blue aluminosilicate mineral, found in aluminium-rich metamorphic pegmatites...
Citrine is a variety of quartz whose color ranges from a pale...
The hard skeleton of red coral branches is naturally matte, but can...
Emerald is a gemstone and a variety of the mineral beryl (Be3Al2(SiO3)6)...
Fire opal is a transparent to translucent opal, with warm body colors...
Fluorite derives from the Latin noun fluo, meaning a stream or flow...