A Near-Field-Communication (NFC) Technology Device Embedded in Bead Cultured Pearls
The Carlsbad laboratory received for examination two dark-colored bead cultured pearls embedded with an electronic device from Jeremy Shepherd, CEO of Pearl Paradise.
Trapiche-Type Emeralds from Pakistan
An emerald from the Swat Valley manifests its growth in three distinct steps, identifying it as “trapiche-type.”
Black Star Sapphire with Dual Treatments
Examination of a large black star sapphire reveals filling with both glass and dopping varnish.
Oiled Spinel
Testing of a Mogok spinel demonstrates that oil can have a significant impact on clarity.
GSA Annual Meeting: Gem Research Session
The 2020 Geological Society of America virtual conference covered a variety of interesting gemological topics.
A New Type of Rutilated Quartz Composite Product
