A very large specimen of fine Calcites richly coated with bright needle Orpiment crystals. Most of the Calcites are twinned and in fine condition, the matrix is a large shard of the same Calcite. A few areas of Realgar are noted too. With backlighting the some of the Calcites show bright red realgar inclusions. Ex Shields Flynn collection, these were a major find about 12 years ago, none since, and the mine is now inactive. A modern Chinese classic not often available in this size or quality. Esthetic.