Preliminary Study on Rubies Reportedly from Pokot, Kenya

Reports on the internal features and spectroscopic and trace-element analysis of rubies reportedly from Pokot, Kenya.

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Etch Marks, Negative Crystals, and Etch Tubes in Spinel from Madagascar

A spinel from Madagascar, mixed in with a parcel of blue sapphire, exhibited an array of internal features.

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“Punsiri”-type FTIR Spectral Features in Natural Yellow Sapphires

Testing of natural-color yellow sapphires from Australia and Thailand with the FTIR features of “Punsiri” heat-treated material.

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Fall 2016 G&G Publication Information

This document provides the publication information for Gems & Gemology

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