Calcite, Level 550 Block 1-South, 2nd Section Krushev dol Mine, Madan District, Bulgaria, Mined January 2016, Miniature 0.5 x 1.0 x 7.0 cm, $65. Online 3/23.
Curvilinear spire of calcite showing stacked parallel growth of disk-like crystals along the c-axis. Lustrous and in excellent condition. From a unique find January 2016.