How it works/Example: Systematic risk is comprised of the âunknown unknownsâ that occur as a result of everyday life. It can only be avoided by staying away from all risky investments. Systematic risk can also be thought of as the opportunity cost of putting money at risk. For example, Option A is an investment of $100 in a risk-free, FDIC-insured Certificate of Deposit.
Zircon Gemstone. Properties-Zircon occurs in a tetragonal crystal structure with a hardness of about 7.5 Mohs .the name of Zircon was given by Persian which means Gold stone.he blue zircon is most popular gemstone in all the colours of zircon. Zircon will also lose its burnish before a thunder-storm. It is mainly used in decorative ceramic industries. It is a principal precursor of zirconium and all its compounds including zirconium oxide.
Naturally occurring zirconium is a mixture of five isotopes and they are found in the percentages shown: 90 Zr (51.5%), 91 Zr (11.2%), 92 Zr (17.1%), 94 Zr (17.4%) and 96 Zr (2.8%). The most naturally abundant is 90 Zr at 51.5%.irconium was first recognized as an element by Martin Heinrich Klaproth in 1789, in Berlin, in a sample of zircon (zirconium silicate) from Sri Lanka. His analysis of the mineralâs composition showed: 25% silica; 0.5% iron oxide; 70% new oxide.