This story is a sequel to The Alicorn Pearl

It has been about two years since the Purple Sentinel (a large Amethyst gemstone belonging to Princess Luna Silverlight) was stolen on Hearth’s Warming Eve from the Royal Canterlot Museum while it was on exhibit. After a remarkable investigation that concluded at midnight that very day by, then Royal Investigator Somnus Silverlight, the thief was identified as a pegasi burglar named Cloud Climber (No other name was found for the suspect). Unfortunately, the Purple Sentinel was never recovered on the body of Cloud Climber as she met with a grisly demise while in hiding at the hands of an unknown suspect. It was several years later that the Purple Sentinel was finally recovered. It was found at the end of the Crystal War in the treasury the Crystal Empire.