James Zigras loaned this unique sulfide mineral called a stibnite to the exhibit.
Mark J. Pospisil, curator at the Perot Museum of Nature and Science in Dallas, gave the display this calcite crystal on fluorite with sphalerite, which came from his collection.
A calcite crystal with marcasite and galena is on loan from the Mark J. Pospisil collection as well.
This 2-lb. (0.9 kg), electric-blue tanzanite crystal, on loan from Robert Lavinsky, is one of the largest samples of its kind in the world, according to the Yale museum.
An aquamarine crystal from Eugene and Rosalind Meieran's collection brings an ethereal glow to the exhibit hall.
Odd and interesting
Another item from the collection of Mark J. Pospisil, this composite of an aquamarine crystal with albite (a feldspar mineral that contains sodium) waits to astonish guests.
This splendid kunzite crystal from the collection of Jim and Gail Spann displays more of the colorful creations found in nature.