O-live March 27, 2017
The most important factor is to understand how the oil was obtained from the olive. Virgin olive oil is obtained from the olive only, using solely mechanical or other physical means, in conditions, particularly thermal conditions, which do not alter the oil in any way. It is pure fruit juice, so to speak. It also meets a set of chemical standards.
Refined olive oil is obtained by treating low quality or defective virgin olive oil with the use of charcoal and other chemical and physical filters. An obsolete equivalent is “pure olive oil”. Note that no solvents are used in the refining process.
Though it may be confusing, you should be aware that the term olive oil, when used alone, refers to a blend of refined olive oil and virgin olive oil.