Sydney, Australia, 2011
Thursday, April 27, 2017
Synthetic diamonds found industrial applications almost immediately after their invention in the 1950s; another 570,000,000 carats (114,000 kg) of synthetic diamond is produced annually for industrial use.
Wednesday, April 26, 2017
Platinum is strong and sturdy. Renowned for its superior durability, it will not wear away over time and will not change shape the way many other metals will.
Tuesday, April 25, 2017
More than 2/3 of the silver produced worldwide is a by product of lead, copper and zinc mining.
|Red Dog mine|
In 2008 the mine produced 515,200 metric tons (507,100 LT; 567,900 ST) of zinc, 122,600 metric tons (120,700 LT; 135,100 ST) of lead, and 283 metric tons (9,100,000 ozt) of silver, for a total metal value of over one billion dollars.
Monday, April 24, 2017
Most freshwater cultured pearls sold today come from China.
|Art Nouveau necklace with black pearls|