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Grey eyes make up about 3 percent of the world's population—the second rarest eye color. There are also rare cases of violet and red-colored eyes. What Determines Eye Color?
According to the World Atlas, only about five percent of the world's population have hazel eyes—just behind the rarest eye color, which is green. The rarity of hazel eyes can be attributed to ...
Amber is the third-rarest natural eye color after green and gray, occurring in 5% of the world's population. [36] People with amber-colored eyes are found in Europe , and in fewer numbers in the Middle East , North Africa , and South America .
The four pigments in a bird's cone cells (in this example, estrildid finches) extend the range of color vision into the ultraviolet. [1]Tetrachromacy (from Greek tetra, meaning "four" and chroma, meaning "color") is the condition of possessing four independent channels for conveying color information, or possessing four types of cone cell in the eye.
Brazilian writer Ziraldo's 1969 children's book Flicts tells the story of a color of the same name (represented as an earthy shade of beige) that is segregated by the other colors found in the rainbow, flags and elsewhere, because flicts is rare, seen as uncharacteristic, and therefore undervalued; at the end of the book, flicts finds its place ...
The world's most favorite color is blue. According to a YouGov poll, pretty much every country on the planet lists it as such. Plus, it's delighted and intrigued scientists and artists (see ...
The Argyle Mine, the world's current main source for pink diamonds, has developed their own pink diamond color classification system separate from that of the GIA. Instead of intensity, the color is divided into a scale from 1–9, 9 being the lightest and 1 being the darkest. However, some Argyle pink diamonds also receive GIA certificates. [15]
The pre-sale estimate for the diamond was US $27 million to US $38 million (£17 million to £24 million). The diamond was shown around the world prior to the auction in Geneva. It sold for US $46 million (£29 million), making it the most expensive single jewel ever sold at auction at the time.