The temperature has been so relentlessly hot this week that the government imposed a four-day mandatory holiday beginning Thursday and urged residents to stay out of the sun. At its most brutal, the so-called feels-like temperature has hit a staggering 159 degrees Fahrenheit, according to The Weather Channel.
12K Red gold: 50% gold and 50% copper. Up to 15% zinc can be added to copper-rich alloys to change their color to reddish yellow or dark yellow. During ancient times, due to impurities in the smelting process, gold frequently turned a reddish color.
Purple gold (also called amethyst gold and violet gold) is an alloy of gold and aluminium rich in gold-aluminium intermetallic (AuAl2). Gold content in AuAl2 is around 79% and can therefore be referred to as 18 karat gold.