CE37AJ7: Elongated amethyst crystals with slightly curved faces and edges. They are translucent, have a very intense and uniform color, are on Sphalerite matrix and are partially coated by white scalenohedral Calcite crystals. The amethyst of such quality is very uncommon at Naica.
Naica, Municipio Saucillo, Chihuahua  Mexico

Specimen size: 7.5 × 5.4 × 3.9 cm = 2.95” × 2.13” × 1.54”

Main crystal size: 2.6 × 0.6 cm = 1.02” × 0.24”