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Jadeite is a pyroxene mineral with composition Na Al Si 2 O 6. It is hard ( Mohs hardness of about 6.5 to 7.0), very tough, and dense, with a specific gravity of about 3.4. It is found in a wide range of colors, but is most often found in shades of green or white. Jadeite is formed only in the subduction zones of continental margins, where rock ...
Larimar is the tradename for a rare blue variety of the silicate mineral pectolite found only in the Dominican Republic, around the city of Barahona. Its coloration varies from bluish white, light-blue, light-green, green-blue, turquoise blue, turquoise green, turquoise blue-green, deep green, dark green, to deep blue, dark blue and purple, violet and indigo and the larimar can come in many ...
Purple is one of the least used colors in vexillology and heraldry. Currently, the color appears in only three national flags: that of Dominica, Spain, and Nicaragua, and one co-official national flag, the Wiphala (co-official national flag of Bolivia) [original research?].
Turquoise is an opaque, blue-to-green mineral that is a hydrous phosphate of copper and aluminium, with the chemical formula Cu Al 6( PO 4)4( OH)8·4 H 2 O. It is rare and valuable in finer grades and has been prized as a gemstone for millennia due to its hue.
The Spanish Republican Flag has three colours: red, yellow, and dark purple. The third colour, dark purple (Spanish: morado oscuro), represents Castile and León by recalling the Pendón Morado, the ancient armorial banner of Castile. The colours of red and yellow symbolise the territories of the former Crown of Aragon.
A capirote [1] is a Catholic pointed hat of conical form that is used in Spain and Hispanic countries by members of a confraternity of penitents. It is part of the uniform of such brotherhoods including the Nazarenos and Fariseos during Easter observances and reenactments in some areas during Holy Week in Spain and its former colonies, though ...
Opal. Hydrated silica. SiO 2 · n H 2 O. Opal is a hydrated amorphous form of silica (SiO 2 · n H 2 O); its water content may range from 3% to 21% by weight, but is usually between 6% and 10%. Due to its amorphous property, it is classified as a mineraloid, unlike crystalline forms of silica, which are considered minerals.
Jasper, an aggregate of microgranular quartz and/or cryptocrystalline chalcedony and other mineral phases, [1] [2] is an opaque, [3] impure variety of silica, usually red, yellow, brown or green in color; and rarely blue. The common red color is due to iron (III) inclusions. Jasper breaks with a smooth surface and is used for ornamentation or ...
Color: Purple, violet, dark purple: Crystal habit: 6 sided prism ending in 6 sided pyramid (typical) Twinning: Dauphine law, Brazil law, and Japan law: Cleavage: None: Fracture: Conchoidal: Mohs scale hardness: 7 (lower in impure varieties) Luster: Vitreous/glassy: Streak: White: Diaphaneity: Transparent to translucent: Specific gravity: 2.65 ...
The color matched the increasingly rare purple rock porphyry, also associated with the imperial family. Crimson and scarlet [ edit ] Tyrian purple retained its place as the premium dye of Europe until it was replaced "in status and desirability" [54] by the rich crimson reds and scarlets of the new silk - weaving centers of Italy, colored with ...