For a lot of engagement ring consumers, the popular diamond colour is white – certainly, the whiter, the higher (and the pricier!). A pure white diamond, usually often known as blue-white and graded colour ‘D’ is exceptionally arduous to come back by and these stones demand premium costs. As you progress down the diamond colour scale (and down the alphabet in the direction of a grading of ‘Z’) the diamond turns into much less white and tends in the direction of pale yellow colours. These ‘tinted’ diamonds are thought of to be of an inferior colour and consequently fetch decrease costs 結婚戒指價格.
At a stage nevertheless, the yellow colour in a diamond is so vivid and so intense that it crosses out of the standard diamond colour chart and is taken into account a ‘fancy’ coloured diamond. Fancy coloured diamonds are exceptionally uncommon and exceptionally helpful, commanding costs of 10’s and 100’s of hundreds of {dollars}. However what causes coloured diamonds? Why are some white and a few not-so-white and a few blue or pink or brown or purple?
Fairly merely, the colour in diamonds is attributable to chemical impurities or deformation of the diamond crystal construction. Ironic, when you think about that on the A-Z diamond colour scale, much less pure means much less worth!
Let’s begin with white diamonds. Diamond is comprised virtually solely of the factor Carbon and a pure blue-white diamond (graded colour ‘D’) will comprise no chemical impurities – it’s a pure type of Carbon. Nevertheless, the realm of the earth the place diamonds develop is basically a chemical hot-pot, with many different components ready to be snapped up by minerals as they develop. One of many extra widespread components is Nitrogen and, when a diamond has a big quantity of Nitrogen in its construction, the diamond takes on a yellow colour. The extra nitrogen within the construction, the extra yellow the diamond.
The presence of nitrogen may impart an orange colour, however orange diamonds are exceptionally uncommon. Violet coloured diamonds are additionally very uncommon and are believed to be attributable to the presence of hydrogen within the diamond construction.
Blue diamonds are amongst probably the most prized colours and are present in solely a restricted variety of areas worldwide. Blue diamonds are triggered when the factor Boron is included in the course of the growth of a diamond. As is the case with Nitrogen and yellow diamonds, the extra Boron there’s in a diamond, the darker the blue colour will likely be.
Black diamonds are the results of an enormous variety of imperfections and inclusions (usually graphite inclusions) inside a diamond. There are such a lot of inclusions that the diamond is nearly opaque and permits virtually no light to go via, leading to a black look. Black diamonds can virtually be thought of as industrial diamonds and are thus historically priced decrease than white diamonds. The diploma of imperfections makes black diamonds very arduous to chop and you’ll usually solely discover black diamonds lower into spherical sensible shapes.
Brown diamonds and pink diamonds are considered the results of the identical course of – crystal deformation. Diamonds, like different crystals, have a daily association of atoms and bonds, however underneath stress, these atoms and bonds can shift out of place and it’s this shift that ends in a colour change to both brown or pink, presumably relying on the diploma of shift. This course of can also be believed to account for purple and purple diamonds which are sometimes found.
Inexperienced diamonds are exceptionally uncommon and are the results of a diamond having been subjected to radiation, usually deep throughout the earth’s crust or mantle, tens of millions of years in the past. Don’t be concerned although, when you’ve got a inexperienced diamond, it is not radioactive!
An vital truth to keep in mind when shopping for colored diamonds is to ask the retailer or diamond seller whether or not the diamond color is pure or enhanced. Many laboratory methods can be utilized impart, enhance or alter the pure color of diamonds and such info have to be given to the diamond purchaser.