Star Ruby Gemstone Wikipedia
The word ruby comes from ruber latin for red. 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.
1930 100 32 carats 20 064 g american museum of natural history.
Star ruby gemstone wikipedia. In the red instance stellate reflection is rarer. Black star sapphire also known as natural star sapphire is a type of corundum aluminum oxide. Aside from the diamond the ruby sapphire emerald pearl.
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. A six rayed star that shimmers over the surface of the stone when it is moved. 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.
Garrard s red ruby burma. It is usually cut into a dome shape to show a star feature. Unusual optical phenomena within the stone such as color zoning the uneven distribution of coloring within a gem and asteria star effects.
25 59 carats 5 118 g carmen lúcia ruby. A ruby is a pink to blood red coloured gemstone a variety of the mineral corundum aluminium oxide. Ruby is one of the traditional cardinal gems together with amethyst sapphire emerald and diamond.
A gemstone also called a gem. 1930s 23 1 carats 4 62 g national museum of natural history. If it is cut with a flat or almost flat face then a golden colour is revealed.
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. A ruby is a pink to blood red colored gemstone a variety of the mineral corundum aluminium oxide. 40 63 carats 8 126 g sunrise ruby.
Other varieties of gem quality corundum are called sapphires. Star ruby is a rare variety of ruby that exhibits asterism. The star effect is owed to aligned needle like rutile inclusions.
It is the rutile which is responsible for its silky shine.
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