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Among other notable specimens on display were a 596-pound (270 kg) topaz, a 4.5 ton block of blue azurite/malachite ore that was found in the Copper Queen Mine in Bisbee, Arizona at the start of the 20th century; [13] and a rare, 100 carat (20 g) orange-colored padparadschan sapphire from Sri Lanka, considered "the mother of all pads."
The five cardinal gems. Clockwise from top: sapphire, ruby, emerald, amethyst, diamond. Cardinal gems are gemstones which have traditionally been considered precious above all others. The classification of the cardinal gems dates back to antiquity, and was largely determined by ceremonial or religious use as well as rarity. [1]
This is intended to be a complete list of properties and districts listed on the National Register of Historic Places on Manhattan Island, the primary portion of the New York City borough of Manhattan (also designated as New York County, New York), from 14th to 59th Streets.
Map of the counties of New York State Map of the counties of New York State. Buildings, sites, districts, and objects in New York listed on the National Register of Historic Places: There are over 6,000 properties and districts listed on the National Register of Historic Places in New York State.
Anonymous owner [3] Black Star of Queensland: Australia 1938 733 carats (146.6 g) Star Black Anonymous owner [4] Star of India: Sri Lanka 563.4 carats (112.68 g) Star Blue-gray American Museum of Natural History, New York [5] Queen Marie of Romania: Sri Lanka 478.68 carats (95.736 g) Cushion Blue Anonymous owner [6] Logan Sapphire: Sri Lanka
Topaz is a silicate mineral made of aluminum and fluorine with the chemical formula Al 2 Si O 4 (F, OH) 2.It is used as a gemstone in jewelry and other adornments. Common topaz in its natural state is colorless, though trace element impurities can make it pale blue or golden brown to yellow-orange. [7]
The Diamond District at 47th Street and Fifth Avenue. The Diamond District is a commercial stretch between Fifth and Sixth avenues in Midtown Manhattan.Until the 1920s, New York's diamond epicenter was Maiden Lane, four blocks north of Wall Street. [4]
Location of New York County in New York. There are 588 properties and districts listed on the National Register of Historic Places in New York County, New York, which consists of Manhattan Island, the Marble Hill neighborhood on the mainland north of the Harlem River Ship Canal, and adjacent smaller islands around it.