Bismuth crystal has lovely properties, including reducing isolation – physical, emotional and spiritual isolation.
It is said to connect you to your higher consciousness making it easy to access wisdom and objective thought. Bismuth is  a great stone to use in the event of needing to bring a group together and strengthen relationships.
It stimulates energy and clears biological energy fields. In Astral Travel it is said to be a great companion, retaining pre-programmed intentions.
Bismuth is laboratory created, where Bismuth (which is  a heavy metal) is melted down, a small rod is inserted into it and slowly lifted as it cools, where the Bismuth naturally forms filling the space forming the amazing Crystals you see today. 
Weighs 500g.