Colombia | Pre Hispanic Tairona necklace. Famous for their beads of carnelian and quartz this is a great example. Robert Liu shows some of these beads on pages 130 and 131 of "Collectible Beads". He says "Carnelian, agate and rock crystal are far more important hardstones than jade in preHispanic ornaments in terms of sheer numbers and beauty. The Tairona culture of Colombia has been the primary source, yielding beautiful beads and amulets in these materials."