Quartz

People usually gaze into crystals for a glimpse of the future. But in this one, you can see the past. Look for phantoms - ghostly outlines of the crystal\'s former shapes - inside the quartz crystal. Tiny bubbles or mineral grains coated earlier crystal faces that stopped growing. When they started growing again, the coating was trapped, leaving shadowy ghostlike forms inside the crystal.

Group: Oxides
Catalog Number: B19167
Carl Bosch collection circa 1965