From what has to be the most famous single calcite find of the modern era in China, these sharp crystals came out around 2000. Amongst the razor-sharp spikes, sits a pristine, jewel-like, sharp twinned calcite measuring 1.8 cm from tip-to-tip across the width atop. Though more spiky-growth calcites have come out since, these twinned crystals remain one-of-a-kind and uniquely desirable. This specimen is sharp all around. Hematite staining gives a red tint to the crystals, which is a beautiful effect. Ex. Dr. Stephen Smale Collection.