Lowest price:$104.99Description: min .50ct 7x5mm oval brazilian emerald. the name emerald comes from the greek smaragdos for green stone. except the rare few they have inclusions that are generally accepted as well as the treatments which are normally listed and should not be a deterrent to purchasing. it has a hardness of 7.5-8 on the mohs scale and should only be cleaned in ionic cleaners or with warm soapy water and a soft brush. keep away from ultra sonic and steam cleaners.