On Demand Learning

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  Gems, Sixth Edition 6th Edition by Michael O’Donoghue (Editor)

  $210.00

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• 

  Jade – History and Treatment (Video ONLY )

  $18.00

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• 

  Diamonds from Kalimantan Webinar (Video only)

  $18.00

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• 

  Diamond from Kalimantan (PDF ONLY )

  $8.00

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• 

  Diamond Grading ABC The Manual.

  $107.00

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• 

  Heat Treatment of Corundum Webinar (Video only)

  $18.00

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• 

  Amber from Myanmar (PDF & VIDEO)

  $22.00

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• 

  Ruby & Sapphires – Treatment and Identification

  $56.00

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