Abbreviation for Optimised Portfolios As Listed Securities.

Optimised Portfolios As Listed Securities. A derivatives security which provides an underlying exposure to international equities represented by selected Morgan Stanley Capital Indices. This enables investors to obtain exposure to an entire overseas market in a single transaction.

Optimised Portfolios As Listed Securities. A derivatives mechanism based on international equities represented by the MSCI Indices that allows investors to buy exposure to an entire overseas market in a single transaction.

Opals are semi-precious stones that are luminous and iridescent, frequently with inclusions of many colors ("fire"). Opal is a mineral composed of noncrystalline (amorphous) silica (and some water) and is a species of quartz. There are three major types of opals: common opal, opalescent precious opal (white or black, with a rainbow-like iridescence caused by tiny crystals of cristobalite), and fire opal (a milky stone that is fiery orange to red in color with no opalescence). Contra luz opals are transparent opals that show a brilliant play of iridescence only when light shines through the stone. Many opals have a high water content - they can dry out and crack if they are not cared for well (opals should be stored in damp cotton wool). Some opals are treated with oil, wax or resin to enhance their finish. Opals have a hardness of 5.5 to 6.5 and a specific gravity of 1.98-2.50. Opals are found in many places worldwide, including Kenya, Czechoslovakia, Brazil, Peru, Honduras, Mexico, Canada, and the USA -- but Australia has a tremendous variety of beautiful opals.