This is actually a manmade stone that comes from Kentucky! I LOVE the stuff though! Check out the video to see what you can't in photos.  This piece is wrapped in 22 gauge solid sterling silver wire and measures approximately 3" inches (7.62 cm) from top to bottom and approximately 1 1/4" inches (3.175 cm) across at the widest point.
 
The pendant will come strung on a 27" inch (68.58 cm) satin cord. A 16" or 18" sterling silver chain can be purchased separately if you choose.  Please us eht ebelow link for the chains.
 
https://www.poisonivy-designs.com/product-page/sterling-silver-chain