Moss Agate is known as the "gardener's stone," symbolizing nature, growth, and abundance. Irina Marwan / Getty Images Moss agate, a mesmerizing variety of chalcedony, has long captivated the hearts ...

An agate gemstone unearthed in Brazil has gone viral for its striking resemblance to Cookie Monster of "Sesame Street" fame. A geologist in California says he's received multiple offers of $10,000 for ...