Generally speaking, a vivid pink diamond will be more valuable than a larger lighter pink diamond, although it is not always the case according to the Diamond Investment & Intelligence Center. The ideal pink diamonds are generally considered to be those which exhibit pure pink color although purple-pink diamonds are generally very highly regarded as well. Brown, orange and purple are the only occurring secondary hues in pink diamonds although a pink diamond can exhibit both brown and orange overtones at the same time, making it a "brownish orangey pink" diamond. Pink diamonds can occur in hues ranging from brown-pink to purple-pink, although pink can also be a modifying color in other diamond colors. The hue refers to the primary and secondary colors, the saturation refers to the intensity of color, and the tone refers to the darkness of the color. Color Īs with the color in all fancy color diamonds, the color in pink diamonds is assessed according to its hue, saturation and tone. Among famous pink diamonds the Daria-i-Noor is the largest pink diamond in the world, estimated to weigh 182 carats together with the Noor-ul-Ain, it is the oldest known pink diamond, both belonging to the Iranian crown jewels. In 2014, the auction buyer was unable to pay the promised sum and was subsequently forced to default on its purchase. One of the most famous pink diamonds is the Pink Star - at 59.60-carats, this type IIa diamond is the largest vivid pink diamond in the world. The larger a pink diamond, and the better its color, the more valuable it will be. However, size is an important consideration as well. Color is considered the most important criterion in grading a pink diamond and determining its value. The same four basic parameters that govern the grading of all gemstones are used to grade pink diamonds–the four Cs of connoisseurship: color, clarity, cut and carat weight. One recent hypothesis suggests that the pink coloration might be due to a specific type of plastic deformation that causes crystal twinning or duplication in the diamond's crystal structure. Īdditionally, while it's widely agreed that pink diamonds' color comes from a process called plastic deformation during their formation, the exact nature of this deformation is under debate. It's been found that pink diamonds exhibit a more complex pattern known as 'graining.' This graining is thought to relate to the pink coloration, as the compressed lattice structure refracts light differently than colorless diamonds, resulting in the pink hue. However, this theory is yet to receive widespread acceptance, and further research is required.Īnother dimension to understanding the color origin in pink diamonds is through the examination of their lattice structure. As per some studies, the presence of trace amounts of radiation could cause color centers within the diamond to absorb green light, thereby creating a pink appearance. įurther to these theories, recent research has also indicated that pink diamonds might owe their distinctive hue to radiation exposure. This theory posits that a seismic shock propelled colorless diamonds to the surface and altered their molecular structure, causing them to appear pink. A similar theory is being tested on pink diamonds that originated in the Argyle Mine in Kimberley, Western Australia. The prevailing theory is that the pink is caused when the diamond is subjected to shear pressure during its formation. Numerous theories have been posited as to how the pink is formed in pink diamonds. Pink diamonds range from flawless to included, as do colorless diamonds. Pink diamonds belong to a category of diamonds called color diamonds, the generic name for all diamonds that exhibit any sort of color. The source of their pink color is greatly debated in the gemological world but it is most commonly attributed to plastic deformation that these diamonds undergo during their formation. Pink diamond is a type of diamond that has pink color. Transparent to subtransparent to translucent
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