Chalama Black Opal takes the fine jewelry industry by storm. A new variety of Ethiopian Opal has been developed by Jewelry Television (JTV), which is the world’s largest retailer of loose gemstones for fine jewelry.The gem’s name, the Chalama Black Opal, comes from the Amharic (Ethiopia’s native language) word that means “to darken.”.According to DiamondNe.ws, Ethiopian Opal was discovered in 2008 and is known for its vibrant colors and unique patterns.ll Things Jewelry. A new variety of Ethiopian Opal has been developed by Jewelry Television (JTV), which is the world’s largest retailer of loose gemstones for fine jewelry.