Los Angeles, CA, USA
Tuesday, August 23, 2016
Monday, August 22, 2016
Natural (or wild) pearls, formed without human intervention, are very rare. Many hundreds of pearl oysters or mussels must be gathered and opened, and thus killed, to find even one wild pearl; for many centuries, this was the only way pearls were obtained, and why pearls fetched such extraordinary prices in the past.
|Silver pendant with fresh water pearls|
Sunday, August 21, 2016
Most western economies' currencies were on the gold standard until 1961. Switzerland was the last country whose currency was tied to gold. 40% of a Swiss Franc was backed by gold until Switzerland joined the IMF in 1999.
Saturday, August 20, 2016
A gold nugget found in the earth can be three to four times as valuable as the gold it contains because of its rareness.
|The Museum of Natural History, Vienna|