MOONSTONE.—Sometimes called the water opal, this whitish stone reflects a bluish tinge. It is supposed to safeguard those who travel to distant parts, especially if the journey is mostly by sea.
OLIVINE.—A green form of chrysolite, which see.
ONYX.—A form of agate in which the bandings of color are milk-white, alternating with another hue. White and red bands produce the stone known as the cornelian onyx: white and flesh colored bands, chalcedonyx: and white and green bands, sardonyx. The latter is the month-stone of August and stands for conjugal felicity.
OPAL.—A semi-transparent stone, the most usual varieties being whitish in color, but flashing various hues as the angle is changed. The opal has been connected with more legends than, probably, any other stone. To some it is a harbinger of bad luck, but most people agree that it is a stone that brings good fortune to the wearer. It is the month-stone of October. Then it denotes hope, it sharpens the sight and the faith of the possessor. It is supposed to lose its flashing qualities when worn by the unfaithful.
PEARL.—A pearl is a symbol of purity and perfection, and, when given to a lady, is said to inspire her love.
PERIDOT.—A form of olivine or chrysolite. See "Chrysolite."
PORPHYRY.—A stone which usually shows light red or white spots on a background of deep red. There are green varieties, however. This stone, when given to a lady, is a tribute to her beauty.
RUBY.—A stone of deep, clear carmine color, when at its best. It is the month-stone of July, and is supposed to correct evils resulting from mistaken friendships.
SAPPHIRE.—A beautiful blue stone which is reserved for those born in September. It is usually supposed to bring good fortune to those in love, but some people hold that it is a symbol of repentance.
SARDONYX.—See "Onyx."