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A list of average market prices for bulk trade of chemical elements, including pure potassium. As of 2020, the price of potassium is 0.154 USD/kg, ranking 10th among the most expensive elements by mass.
Tyrian purple is a reddish-purple natural dye made from the mucus of several species of predatory sea snails in the family Muricidae. The dye was highly valued in ancient times and was used by Phoenicians, Greeks, Romans and Byzantines as a symbol of power and wealth.
As a result, the pigment was “expensive and was worth more than gold pound for pound.” The lump of Tyrian purple dye found at the Carlisle Cricket Club is “roughly the size of a ping pong ...
Find out the highest prices paid for paintings by artists such as Leonardo da Vinci, Vincent van Gogh, and Pablo Picasso. The list is based on inflation-adjusted values and includes details of the sales, auction houses, and buyers.
Purple is a color similar to violet light, created by mixing red and blue pigments or light. It has long been associated with royalty, luxury, and spirituality, and was made from a rare and expensive dye in ancient times.
Learn about the history, variations and meanings of the color purple, from ancient Tyrian purple to modern web colors. See examples of different shades of purple and how they are used in art, fashion and culture.
A precious metal is a rare, naturally occurring metallic element of high economic value. Learn about the properties, history, and types of precious metals, such as gold, silver, platinum, and palladium, and how they are traded as bullion or coinage.
Learn about the different colors of diamonds, how they are graded and how they affect their value. Find out the causes and effects of color impurities, defects and enhancements in diamond crystals.