Most natural Emeralds have inclusions, often called “jardines”, or gardens, which are regarded as the emerald’s natural birthmark. The fewer the fissures the more expensive the emerald. Cut, natural emeralds of the highest quality weighing more than two carats are extremely rare and costly.  A large, deep green emerald with minor blue or yellow secondary coloration that is relatively free of inclusions may cost up to tens of thousands of dollars per carat.