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.
Zircon is ubiquitous in the crust of Earth. It occurs as a common accessory mineral in igneous rocks (as primary crystallization products), in metamorphic rocks and as detrital grains in sedimentary rocks.Large zircon crystals are rare.ircon is rare within mafic rocks and very rare within ultramafic rocks aside from a group of ultrapotassic intrusive rocks such as kimberlites, carbonatites, and lamprophyre, where zircon can occasionally be found as a trace mineral owing to the unusual magma genesis of these rocks.