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1.
Spinel is commonly mistaken for ruby, sapphires and tanzanite.
Of the worlds crown jewels, most of what was thought to be rubies, are actually spinel. The most infamous is certainly Prince Edward's (the Black Prince, eldest son of King Edward III of Britain in the Middle Ages) magnificent 170 carat red "ruby" that currently adorns the Imperial State crown in the British Crown jewels, was discovered in the 1940s to actually be red spinel.
Another would be a 352 carat stone currently owned by Queen Elizabeth, the Timur Ruby, which has the names of all the Mighal emperors who previously own it, engraved on the face...turned out to be red spinel, as well....just imagine.
Spinel is now a gemstone that is treasured for its own beauty. It's wonderful brilliance, hardness and wonderful range of spectacular colors makes this gemstone a favor amongst dealers. It's colors range from reds, pinks, violet, and blues.
Due to the fact that it is actually spinels that are created in a labor ...more
Answered by Kavita Prsd, 08 Mar '10 01:19 am
Of the worlds crown jewels, most of what was thought to be rubies, are actually spinel. The most infamous is certainly Prince Edward's (the Black Prince, eldest son of King Edward III of Britain in the Middle Ages) magnificent 170 carat red "ruby" that currently adorns the Imperial State crown in the British Crown jewels, was discovered in the 1940s to actually be red spinel.
Another would be a 352 carat stone currently owned by Queen Elizabeth, the Timur Ruby, which has the names of all the Mighal emperors who previously own it, engraved on the face...turned out to be red spinel, as well....just imagine.
Spinel is now a gemstone that is treasured for its own beauty. It's wonderful brilliance, hardness and wonderful range of spectacular colors makes this gemstone a favor amongst dealers. It's colors range from reds, pinks, violet, and blues.
Due to the fact that it is actually spinels that are created in a labor ...more
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2.
PHYSICAL CHARACTERISTICS:
Color is red, green, blue, purple, brown, and black; but red is by far the more common color.
Luster is vitreous.
Transparency: Crystals are transparent to translucent and sometimes nearly opaque.
Crystal System: Isometric; 4/m bar 3 2/m
Crystal Habits include the typical octahedron, but can be found as dodecahedrons and combinations of other isometric forms. Also as rounded grains in alluvial placer deposits.
Cleavage: None
Fracture is conchoidal.
Hardness is 7.5-8.0
Specific Gravity is 3.6-4.0 ...more
Answered by gkr, 06 Mar '10 01:26 pm
Color is red, green, blue, purple, brown, and black; but red is by far the more common color.
Luster is vitreous.
Transparency: Crystals are transparent to translucent and sometimes nearly opaque.
Crystal System: Isometric; 4/m bar 3 2/m
Crystal Habits include the typical octahedron, but can be found as dodecahedrons and combinations of other isometric forms. Also as rounded grains in alluvial placer deposits.
Cleavage: None
Fracture is conchoidal.
Hardness is 7.5-8.0
Specific Gravity is 3.6-4.0 ...more
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