Ruby is one of the most important gems in colored gems market. Chromium is a trace element that causes ruby red, and its color ranges from orange red to purple red. The more chromium, the stronger the red color. Chromium can also cause fluorescence and increase the intensity of red. Ruby, as a symbol of passion, is an ideal romantic gift. Consumers are attracted by its rich colors, because it also means wealth and success.

_ _ Stone _ _ symbolizes high _, truth, truth _, and _ _ world _ _ is often used in the clothes of _ _ royal family and gods _. The name "_ _ stone" is also used for any jade that has no _ _ color and cannot be distinguished from _ _ stone. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _