Chalcopyrite (iridescent) from Cornwall.
12 absolutely unique kinds of beaches you probably didn’t know existed.
Cool rocks and minerals
Awesome rare earth mineral collection Note: Bismuth is manmade but still intriguing to look at.
Gems: Minerals that are rare, beautiful and durable.
uncut diamonds: the outisde appearance really hides the beauty inside. Many things (and people) are just like that. Hmmm...
Quartz var.Amethyst - Goboboseb Mts., Brandberg Area, Erongo Region, Namibia Size: 8.5 x 3.5 x 3.5 cm
Fluorite (CaF2) 3.AB.25 Fluorit-Gruppe 3: HALOGENIDE A: Einfache Halogenide, ohne H 2 O B: M: X = 1: 2
Queensland boulder opal, 43 x 26 x 8mm, 73 carats
Quartz with needle-like rutile inclusions. Rutile is a titatium mineral.