Thank you for viewing. This is a space glass necklace made of borosilicate glass by an artist. I'm not certain because I don't have the original case, but I believe it's a piece by +α. I purchased it and kept it in an accessory case, but I am selling it now to organize my collection. When shipping, I will package it carefully to prevent the glass from being damaged. Thank you. #SpaceGlass #Borosilicate #GlassNecklace #GlassArt #Christmas