Turquoise gemstones are very often enhanced, and good quality natural, untreated stones are no longer the norm. Other types of stone which have been dyed are also frequently seen. The best quality Turquoise is...
Pearls, Types, Guide and Simple Detection Perhaps the best loved gems of all time, pearls and their modern counter parts, cultured pearls. The online marked is full with pearls and pearl imitations, so much...