Amarillo Starlight
16.37 carats (rough) 7.54 carats (cut) Near here on August 20, 1975, W.W. Johnson, of Amarillo, Texas, found the largest diamond recorded since the Crater of Diamonds became an Arkansas State Park in 1972. While resting under a shade tree, Johnson saw the sun glinting off of something about 30 feet away and picked up a quarter-sized diamond that had been unearthed by recent rainstorms. He did not realize the significance of what he had found until he learned that it was bigger than the 15.36-carat Star of Arkansas, which was discovered in 1956. For a while Johnson rented his rough diamond to museums for $300 to $500 a week. He later had it cut into a marquise-shape gem, which was valued at more than $150,000.