Melendez collection

Fluorite, Pyrite. Naica Mine, Naica, Mun. de Saucillo, Chihuahua, México. 9 x 6.5 x 4.3 centimeters 3.6 x 2.6 x 1.72 inches

Quartz, var. Amethyst. Cerro De La Concordia, Piedra Parada, Mun. de Tatatila, Veracruz, México. 5 x 4.2 x 3.3 centimeters 2 x 1.68 x 1.32 inches

Quartz, var. Jacinto de Compostela. Chella, Valencia, Valencian Community, Spain. 3.6 x 3.5 x 2 centimeters 1.44 x 1.4 x 0.8 inches

Spinel. Luc Yen, Yenbai Province, Vietnam. 4.6 x 2.3 x 2 centimeters 1.84 x 0.92 x 0.8 inches