The inverted star symbol has a long history dating back to the early Christian church. It was used together with the cross in 312 A.D. as early Christians believed the inverted star was a symbol of Jesus Christ. Over the centuries it has graced many buildings, windows, and even national flags. There are many ancient cathedrals and churches with the inverted stained glass star across Europe and North America. Famous shrines, such as Amiens Cathedral in France (built 1230 A.D.) or the Marktkirche church in Germany (built 1350 A.D.), have massive stained glass inverted stars.
(Zion's Mercantile at the Riverwoods in Orem is where I purchased this item. If I remember correctly it was under $20 if you are interested in purchasing one too.)