Hourglass Selenite Crystal | Gypsum Crystal | Oklahoma USA Nantan Dimensions: 150x110x80 mm / 5

Dimensions: 150x110x80 mm / 5

This piece displays extremely well showing a beautifully etched pattern and was coated with a rust protectant

Name: Echinoid Micraster

This is a great piece at 124 milligrams

Hourglass Selenite Crystal | Gypsum Crystal | Oklahoma USA Nantan Dimensions: 150x110x80 mm / 5These are cabinet sized Hourglass Selenite Crystals from Salt Plains, Oklahoma. Oklahoma designated the unique hourglass selenite crystal as the official state crystal in 2005 after elementary school students from Bryant and Red Oak School petitioned the state legislature. Hourglass selenite crystals are found only on the salt plains of Oklahoma, a unique 11,000 acre geological area. The salt plains were formed by repeated flooding by sea water