Beautiful amethyst heart with great indents

An amethyst heart from Uruguay with lilac-colored crystals and striking depressions. The outer edge is formed as a fine, light agate rim, cut and polished. The crystal surfaces inside are unworked and sparkle brightly.

The heart was cut from a gas bubble in volcanic lava rock, about 100 million years old. Inside, amethyst crystals grew layer by layer over millions of years from silica-rich solutions.

Uruguayan amethyst geodes are among the classic worldwide deposits. The depressions are created by the inward-growing crystallization and give each piece its own topography.

Three observations characterize the piece: lilac-colored crystal interior, subtle agate rim, strong light reflection on the crystal tips.