The breakthrough came when a piece of core was returned to English Heritage from the US which gave archaeologists the chance to analyze it
stones
Stonehenge, located near Amesbury, Wilts., is estimated to have been built around 3.000 BC
The thief swiped the bluestone last week from the Preseli Hills in Pembrokeshire, Wales, where some of the stone used for the Wiltshire monument was quarried and transported
Khachkars are also known as Armenian Cross Stones
They are made of Andesite, a gray to black volcanic rock