1930s 23 1 carats 4 62 g national museum of natural history. 1930 100 32 carats 20 064 g american museum of natural history. 40 63 carats 8 126 g sunrise ruby. It is the rutile which is responsible for its silky shine. The archetypal asteria is the star sapphire generally corundum with near uniform impurities which is bluish grey and milky or opalescent which when lit has a star of six rays.
The greeks for example greatly valued asteria gemstones which were regarded as powerful love charms and helen of troy was known to have worn star corundum. A ruby is a pink to blood red coloured gemstone a variety of the mineral corundum aluminium oxide. The star effect is owed to aligned needle like rutile inclusions. The chemical composition and features for black star were analyzed in the journal of gemmology where it is stated that black star has a typically high fe ti. The star ruby occasionally found with the star sapphire in sri lanka is among the most valued of fancy stones other examples are star topaz and certain.
Garrard s red ruby burma. Unusual optical phenomena within the stone such as color zoning the uneven distribution of coloring within a gem and asteria star effects. A gemstone also called a gem. 25 59 carats 5 118 g carmen lúcia ruby. A six rayed star that shimmers over the surface of the stone when it is moved.
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Star ruby is a rare variety of ruby that exhibits asterism. Aside from the diamond the ruby sapphire emerald pearl. If it is cut with a flat or almost flat face then a golden colour is revealed. A ruby is a pink to blood red colored gemstone a variety of the mineral corundum aluminium oxide. Other varieties of gem quality corundum are called sapphires.It is usually cut into a dome shape to show a star feature. The word ruby comes from ruber latin for red. It is usually cut into a dome shape to show a star feature. Star ruby is a rare variety of ruby that exhibits asterism. Garrard s red ruby burma.
The word ruby comes from ruber latin for red. The greeks for example greatly valued asteria gemstones which were regarded as powerful love charms and helen of troy was known to have worn star corundum. 1930s 23 1 carats 4 62 g national museum of natural history.
