Quarterly Crystal: Orpiment in Barite
Barite cluster from Nevada hosts numerous yellow orpiment crystal inclusions.
Sapphire Inclusion with Rutile “Silk” in a Burmese Star Sapphire
Illumination techniques reveal a remarkable sapphire inclusion within a Burmese star sapphire.
Trapiche-Like Ruby from the Batakundi Mine, Kashmir
Trapiche-like ruby from Kashmir shows a well-formed fixed six-rayed pattern.
Condor Agate from Argentina
A vibrant orange and yellow agate displays interesting concretions in its core.
Grandidierite Inclusions in Sapphires
Grandidierite, an unusual inclusion in sapphire, independently encountered by two laboratories.
Fossil Insect in Opal
Precious opal hosts a trapped insect.
Lazurite in Spinel
A light gray spinel features a striking vibrant blue lazurite inclusion.
Native Copper Inclusions in Indonesian Purple Chalcedony
Indonesian purple chalcedony containing interesting native copper inclusions is a first for the Carlsbad lab.
“Double Bubble” Multiphase Inclusion in Beryl
A “double bubble” of gas within gas appears in a 64.10 ct pale green rough beryl at room temperature.
U-Pb Ages of Zircon Inclusions in Sapphires from Ratnapura and Balangoda (Sri Lanka) and Implications for Geographic Origin
Establishes a metamorphic origin for sapphire samples from these deposits, supported by their trace-element composition and inclusion characterization, including the age dating of zircon inclusions.