Rajya Maureen. Diamonds. August 23rd , 2017.
An even and perfectly symmetrical oval diamond can go well with any jewelry. They are used for necklaces, bracelets and especially rings. The oval diamond ring is mostly used as an engagement ring. Women with small and tiny fingers opt for oval cut rings as they give an elegant and slender look to their fingers. For engagement rings, the most important parts are the shape and settings. If you have chosen an oval cut for the diamond in your engagement ring, there are a plenty of settings to choose from. A few of them have been listed below.
Diamond earring size is measured in "ct.t.w.", which is carat total weight. This system of measurement is for diamond studs. Each stud represents half of the pair's total carat weight. For example, if you select 1 carat earrings, the size of each diamond will be carat in weight. A comfortable and elegant earring size for adult women will be 1.5 ct.t.w. Of course, when you buy studs for small children, the size has to be much smaller as their earlobes are small and delicate, and large-sized studs might cause injury to their earlobes. Generally, 0.01-0.05 carat diamond studs are suitable for young children. A 0.05 carat stud would have a diamond that is approximately 1.8 mm in diameter.
The top diamond producing countries of the world are Botswana, Russia, Canada, South Africa, Namibia, Angola, Australia, Congo, and Zimbabwe. Their combined production in 2012 was 128 million carats. In 2011, US consumers bought diamonds worth USD 22 billion. According to a report by GIA, from the 1870s, more than 4,500,000,000 carats (900,000 kg) of diamonds have been mined by now. The rising demand for the gem powers the diamond mining industry, which employs various techniques to mine its ores from the depths of our planet. Here's a brief overview of diamond geology and mining techniques, employed by companies like De Beers, Alrosa, Rio Tinto, and Petra.
In the case of a blue colored diamond some of the nitrogen has been replaced by Boron. Boron will reflect the blue wavelength of the light spectrum. The higher the concentration of boron the more color will be showed. At a level of one or a few boron atoms for every million-carbon atom, an attractive blue color results.
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