This is a spectacular display specimen of twinned calcite from Pennsylvania’s York Building Supply Quarry. Collecting these specimens was very difficult, as the pocket walls came apart as some were collected. This piece was collected in 2003 by one of Pennsylvania’s great field collectors, Skip Colflesh, and he repaired it in two places (down the middle of the matrix, and reattaching the main crystal). The main crystal measures 5.6 cm across and is a gorgeous, glossy, light-golden twin. The twinning is just wonderful. Stands perfectly for display as photographed. From the John S. White Pennsylvania Collection.