Lab NotesGems & Gemology, Winter 2009, Volume 45, No. 4

Winter 2009 G&G; Lab Notes

A New Chalcedony Treatment DiamondView Indicates Treatment in Irradiated Brown-Orange Diamond Fancy Intense Blue Type IIb Synthetic Diamond Diamond with Flower-Shaped Cloud Unusual Trigon-Shaped Clouds Indicate Two Diamonds Cut from the Same Piece of Rough Colorless Cat’s-Eye Phenakite Blue Sapphires Diffusion Treated with both Titanium and Beryllium Interesting Inclusion Aggregate in Tsavorite Uranium Mineral as Inclusion in Turquoise To view the full section, download the PDF above.

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