The Effect of Low-Temperature Heat Treatment on Pink Sapphire
Twelve pink sapphires undergo low-temperature heat treatment and reveal a correlation with the 3232 cm-1 FTIR peak.
Euhedral Phantom Sapphire in Sapphire
A phantom sapphire crystal within a host sapphire crystal was recently examined at GIA’s Carlsbad laboratory.
Helical Inclusion in Colombian Emerald
A 7.54 ct natural emerald containing a 3D helical inclusion is examined by the Tokyo laboratory.
Mexican Opal with Large Fluid Inclusion
Although opals generally contain water in their structure, fluid inclusions large enough to be resolved with the microscope are rare; those that can be seen with the unaided eye are exceedingly rare.
好莱坞珠宝:令明星光彩照人的配饰和珠宝
Kazanjian Foundation(カザンジャン財団)から貸し出された「ハリウッドの宝飾品」はハリウッドのスターに関連する幾つかのジュエリーやアクセサリーを展示しています。
