Calcite

 Calcite is the most common form of calcium carbonate. It is known for its great variety and the beautiful development of its crystals. Calcite is also called limespar. The name is derived from the Latin word calx, meaning “lime.” More than 300 forms of calcite crystals are known, and they combine into a thousand different […]

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Brazilianite

A Natural gemstone named after the country of Brazil, in which deposits were discovered for the first time in 1944. Presently, deposits are found in Minas Gerais in Brazil. At first it was incorrectly thought of as a chrysoberyl. Brazilianite is a sodium aluminum phosphate hydroxide. Brazilianite is a rare and beautiful crystal, much priced […]

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Blood Stone

Bloodstone is also known as heliotrope. It is a dark green variety of chalcedony colored by traces of iron silicates and with patches of bright red jasper distributed throughout its mass. Particles of chlorite or included hornblende needles cause the green color. Red spots are caused by iron oxide. The name heliotrope derives from the […]

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Black Onyx

Onyx is the striped semiprecious variety of agate with white and black alternating bands.  The word onyx derives from the Greek word anux or “claw.”  Other varieties of onyx are the carnelian onyx, with white and red bands, and sardonyx, with white and brown bands.   Onyx is made up of black and white bands.  […]

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Baltic amber

 Amber (or, technically, resinite) is fossilized tree resin (not sap), which has been appreciated for its color and natural beauty since Neolithic times. There are five classes of amber, defined on the basis of their chemical constituents. Because it originates as a soft, sticky tree resin, amber sometimes includes plant remains, moss, pine needles, spiders […]

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Aventurine Quartz

 Aventurine is a variety of quartz that has a spangled appearance due to sparkling internal reflections from uniformly oriented tiny inclusions of other minerals.  Aventurine quartz is named for the type of glass discovered in Italy at the beginning of the 1800s; it was called Ventura because the glass was discovered by accident or luck. A […]

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