Very large loose natural Colombian emeralds are a very scarce stone. In the trade anything over two carats is considered big, over five is considered very exceptional and scarce. This incredible Colombian emerald is also six carats and that puts it right up there in the upper echelons of the best of the best. The colour of this beautiful emerald gemstone is just what you would expect from such a fine stone. This is an excellent investment gemstone which you could wear or put into you collection. Big Colombian emeralds are only getting rarer and rarer.