Natural Zambian Emerald Loose Gemstone. Emerald weight till 25 ct. Emerald shape/ square. Buy a natural square cut quality AA, weight 23 carats total. Emerald available to order, worldwide delivery. This gem is certified and its photos, video and lab certificate are available on our gems online store. The value of the stone is good considering its properties and effects. Gemstone suitable for an emerald ring or an emerald pendant .