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.
White is the most common color of gold jewelry and results from mixing pure. gold with a white metal such as nickel or palladium. Pink, rose and red gold are. derived by adding copper to the mix; the greater the copper content, the redder. the gold. Silver is responsible for turning gold a pale greenish-yellow, while silver. combined with manganese and copper turns gold a pale shade of grey.