This is a superb, exceptionally sharp twinned calcite from the famous Leiping Mine (where the more well-known V-twins were found in the late 1990s). This habit is fairly uncommon and usually the crystals are included, off-center, or otherwise marred. This piece is a perfect miniature with symmetry you could only wish for in most calcite specimens. It is gemmy and lustrous, and complete all around. Joe Budd Photos.