|Dimensions (mm)||not provided|
|Weight (carats)||not provided|
SIX STAR RUBY.
This is a beautiful quality 6 star Ruby with reddish purple colours.
We have taken the photo in the sun so you can see how it will look out side.
weight 5.83 cts app
Size10 x9 x6 mm
As with all our stock you may return it for a full refund if not pleased.
Member of the International coloured stone association.
A Ruby is a pink to blood red gemstone, a variety of the mineral corundum. The common red color is caused mainly by the element chromium. Its name comes from ruber, Latin for red. Other varieties of gem-quality corundum are called sapphires.
All natural rubies have imperfections in them, including color impurities and inclusions of rutile needles known as "silk". Gemologists use these needle inclusions found in natural rubies to distinguish them from synthetics, simulants, or substitutes. Usually the rough stone is heated before cutting. Almost all rubies today are treated in some form, with heat treatment being the most common practice. However, rubies that are completely untreated but still of excellent quality command a large premium.
Some rubies show a 3-point or 6-point asterism or star. These rubies are cut into cabochons to display the effect properly. Asterisms are best visible with a single-light source, and move across the stone as the light moves or the stone is rotated. Such effects occur when light is reflected off the silk (the structurally oriented rutile needle. inclusions) in a certain way. This is one example where inclusions increase the value of a gemstone.
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Shipment Provider Standard Shipping (insured) Shipped 22nd Jun 2018 12:55pm AEST ETA 20th Jul 2018 AEST
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