This is a fine, old-time classic English Calcite in very good condition, and you can see why these jewels were so valued by the nobility of England and abroad in the 1800s for their textbook perfection and clarity. This excellentbpiece is richly covered with glassy, colourless, modified scalenohedral Calcite crystals to 2,3 cm and they are of very good quality. The random orientation of the Calcites, along with their numerous crystal faces, results in any incident light providing a sparkle to the piece. This kind of stuff from Egremont, England is highly sought-after, and very difficult to obtain. These date to the mid to late 1800s, generally.