Last checked at 
Sept 22 (Reuters) - Precious stones miner Gemfields Plc swung to a full-year profit as its revenue from the saleof emeralds and rubies more than tripled.
The company reported a pretax profit of $36.3 million forthe year ended June 30. It reported a pretax loss of $20.1million a year earlier.
The London-listed miner's revenue jumped to $160.1 millionfrom $48.4 million a year earlier. Revenue from its first rubyauction this year generated about $33.5 million.
Gemfields currently mines emeralds in Zambia and rubies inMozambique. Last week the company said it would hunt forsapphires in Sri Lanka. (Reporting by Karen Rebelo in Bangalore; Editing by GopakumarWarrier)
