Show INDIA WORLDS LARGEST STONE DISCOVER cable bombay did say where giant sapphire found district river upper burma where ruby sapphire arc arc nrc eight long rough bid opal diamond rough sold price place sapphire low indicate doubt immense sapphire find market trill cut numerous small brooklyn engle engle eagle precious stone history burma cable bombay Bom sapphire five discovery second precious stone kept secret since 1917 fall black opal found nevada 2566 pound Cullin diamond rough wei second stone far weight opal size bulk twenty cubic inc fifteen cubic ton |