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Entries in Australia (49)


North Australian Diamonds to Conduct Feasibility Study at Merlin

North Australian Diamonds Limited chose Consulment Pty Ltd. to conduct a definitive feasibility study (DFS) on a 300,000-carat per year operation at its Merlin diamond project in Australia. The DFS will consider a potential larger scale operation, but foremost, it will consider a number of key variables for the Merlin project, some of which are well advanced or completed.

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Argyle Diamond Mine, Kimberley, Australia

The Argyle mine, located in the Kimberley region in the far north-east of Western Australia, is the world's largest single producer of diamonds. The mine lies some 550km south-west of Darwin by air. The region is remote, rugged and hot, with temperatures of over 40°C during the wet season from October to March.

When production began in 1985,

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A Fine Opal Specimen

Under Opal Horizon Ltd.’s recently introduced grading system, gem opals, such as the one pictured here, that are of exceptional quality with a high visual impact and full spectral play of color are graded “exceptional.”

An Australian Company introduces an Opal Grading System

Carlsbad, Calif.--Opal Horizon Ltd., a Brisbane, Australia-based opal mining, sales and marketing company, presented a new, comprehensive system for grading gem quality opals on at the Gemological Institute of America’s 2011 Symposium.

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