Treated / untreated emeralds - Oiling is a commonly accepted practice, now if an emerald has less inner fissures and cracks it will be a minor or no oil emerald so more durable and better quality then emerald whose clarity is altered with significant amount of oil.
Major mines in Colombian emerald mining region are Chivor, Muzo, La Pita, Coscuez, Penas Blancas and from these mines comes finest premium quality of emerald. All the mines show a slight difference in the characteristics of stones produced due to geographical differences which are difference of shade / hue clarity luster / brightness and most important is type of inclusions present. So in Colombian origin emeralds identifying difference on basis of mines needs a lot of expertise and only few experienced people who are from long in the trade can recognize, the GIA, GRS or Gubelin swiss lab just gives the origin which is based on origin as Colombia and almost do not mention name of mines.
Jewelfields is a trader and wholesale supplier of certified and non certified Colombian origin finished unmounted emerald gemstones from GIA, IGI, Gubelin gem lab (swiss), GRS so explore our collection.
Certified Colombian emeralds / certified Muzo emeralds for sale / loose Muzo mines emerald gemstone / Chivor emeralds in low price / we ship to major countries like China, London UK, USA, Japan, Russia, Moscow, Europe, Italy, Australia and more.