*V4800-18.7/17-CryGF 18.7x17mm Vtg 80s Swarovski Heart Stone Crystal GF
V4800-18.7/17-CryGF 18.7x17mm Vtg 80s Swarovski Heart Stone Crystal GF. Swarovski Article #4800. These are a mirror bright, foil-backed clear with a gold foil backing. The faceting is so fabulous on these! Very deep back. No hole, and I haven't been able to find any settings for these. Sorry :( Sparkle video in comments.
24 heart stones available $4.25 each or 3 for $10.25
These came to me packaged with their original box, dating from the 1980's. They have a faceted and pointed back, as shown.