From the top:
-fulgerite (fused sand from lightning strike), mammoth ivory, volcanic ash
-bismuth, malachite, pyrite
-petrified wood, fluorite, amber, aerogel (the cloudy looking one), faceted gemstones
-trinitite (formed at Trinity site, Alamagordo NM), meteorite oxide (Meteor Crater AZ)
-ulexite (natural fibre optic stone)
