Lab NotesGems & Gemology, Volume 46, No. 1

Spring 2010 G&G Lab Notes

Coated and Fracture-Filled Orangy Red Diamond Diamond with Rare Green Fluorescence Identification of Irradiated Black Diamonds Large HPHT-Treated Type IIb Blue Diamond Pink Diamonds Colored by Multiple Treatment Processes Type IIa Greenish Yellow Diamond Colored by IR-Inactive Nitrogen Red CVD Synthetic Diamond with Multiple Treatments Exceptionally Transparent Treated Jadeite Large Pair of Natural Freshwater Pearls Blockage-Induced Growth Tubes in Tourmaline Treated Green Turquoise To view the full section, download the PDF above.

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Spring 2010 Lab Notes | Gems & Gemology