The uniform stacking of layers of nacre below the surface of the shell also causes interference effects that contribute to the iridescent colors. The pearl derives its iridescence from the diffraction and interference of white light, caused by tiny overlapping platelets of calcium carbonate.
like assets many liabilities are intuitive however there may be some instances where a liability needs to be recorded although the company may not have perceived it as one an example of this would be a finance lease where there is no present obligation to pay the future lease payments
In accounting and finance, equity is the difference between the value of the assets and the cost of the liabilities of something owned. For example, if someone owns a car worth $15,000 but owes $5,000 on a loan against that car, the car represents $10,000 equity. Equity can be negative if liability exceeds assets.