Giant crystal tree may be next piece of art approved for Denver International Airport
Denver City Council will have its first reading to approve a $3.5 million contract with an artist for a giant piece of ...
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GeoPicture of the week: Biggest crystals in the world
The translucent pillars, some as long as telephone poles and as wide as tree trunks ... The chamber contains giant selenite crystals (gypsum, CaSO4 · 2 H2O), some of the largest natural crystals ...