Columbite-tantalite inclusions in aquamarine

Weight: 3.59 g
Size: 22.7 x 11.0 x 10.4 mm



Sample type: unpolished crystal
Origin: Pakistan
Comment: Scanning Electron Microscopy (SEM) confirmed inclusion identification of columbite-tantalite, forming dark brownish needles and often fan and star shapes. Colorless crystals included in the same aquamarine crystals were identified by SEM as albite.