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A cabochon is categorized as a gemstone which is not faceted but shaped and polished.
What is an untreated ruby. Some rubies that have inclusions display a quality called asterism when polished where a star like reflection of light can be observed. Natural ruby rings can also be used to complement diamond rings. Ruby treatment guide unheated untreated completely natural ruby. And in order to enhance its overall beauty it is treated in different ways.
If the ruby gem is large then it becomes rarer and even more valuable. Of course natural ruby s price is much higher compared to synthetic versions. There s nothing like the lustrous red of a ruby and finding an untreated stone is exceptionally rare. One type of ruby a star ruby can be polished in the same way as cabochons and if it becomes clear it can be very valuable.
This technique has been used for centuries to treat ruby gemstones. However there are two types of ruby gemstones. The color of a ruby is due to the element chromium. No other process apart from cutting and polishing has been performed on these rubies.
Heating is also a method that is being used to improve the quality of the ruby stone. These stones ave been mined out of the ground cut and polished and presented to the market. Synthetic rubies also exist and are sometimes used as a substitute for naturally occurring gemstones. If they have natural inclusions inside that you can see through a microscope and normal 10 times 10x magnification loupe.
By far the rarest and most valuable ruby gemstone. Last year the today show did a hidden camera shopping spree to shine a spotlight on this disclosure and price gouging issue. Natural ruby that are not heated or treated are quite easy to distinguish. Natural inclusions include the following.
The word ruby comes from ruber latin for red. Watch the video for more information on rubies. A ruby is a pink to blood red coloured gemstone a variety of the mineral corundum aluminium oxide other varieties of gem quality corundum are called sapphires ruby is one of the traditional cardinal gems together with amethyst sapphire emerald and diamond.
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