This genuine Natural amber piece comes from Chiapas Mexico. AAA quality with great green fluorescence! This IDEAL windowed specimen shows NO stress fractures and no inclusions of any kind.this is the most recommended variety for creating the perfect carving. Adding this specimen to any amber collection will only enhance to this specimens real value! Certified authentic by known scientific authorities well known to be from the Miocene to Oligocene geological Epochs on average 18 to 22 million years old!