Glass Imitation of Star Sapphire
A fixed star indicating manufactured asterism helps to identify an imitation star sapphire.
Quarterly Crystal: Fibers and Rods in Euclase
A well-formed euclase crystal possessed a very rare orange-pink color reminiscent of padparadscha sapphire.
Pink Aventurine Quartz with Alurgite Inclusions
A “strawberry quartz” bangle is identified as pink aventurine quartz with alurgite inclusions.
Laboratory-Grown Diamond with Internal Laser Markings
Accidental laser damage likely caused unusual internal spiral markings in a 2.44 ct CVD-grown diamond.
Honey Brown and Light Yellow Hydrogrossular
The Gem and Jewelry Institute of Thailand (GIT) identifies two samples as hydrogrossular using advanced testing techniques.