Offers a classification of radiation stain morphology and texture using photomicrography to supplement known characteristics of naturally irradiated diamonds.

Examines the organic-rich cores of non-bead cultured “keshi” pearls from Pinctada maxima mollusks to distinguish them from natural pearls of the same species despite their similar internal structures.

Analyzes a 1688 probate inventory of Gregorio di Girach-Mirman’s extensive gemstone collection to highlight the global reach and influence of Armenian merchants in the early modern luxury trade.