Fancy colored diamonds can found be a surprisingly wide variety of hues, from faint shades of pastel pink, brown or yellow to the deep or vivid shade of blue, green, orange and red. Their colors are the result of elements other than carbon being present in the diamond at the molecular level, and sometimes because of faults in the diamond’s crystal structure.
They are exceedingly rare. Indeed, only about one-tenth of one percent of the gem-quality diamonds mined each year are truly fancy colored.
But not all fancy colored diamonds are equally as valuable.
Among the more commonly obtained varieties are the browns, greys and fancy yellows. Next up the scale are intense and vivid yellow diamonds, or canary yellows, and orangey diamonds. Then come the pure orange stones, greens, purples, pinks and blues, and at the top of the heap, and extremely rare are red diamonds.