Nice to see all the agate beads. I used to get them all the time at Chatuchak Market in Bangkok. They were always said to come from Cambodia and I assume they were coming via Poipet into Aranchaphratet. Sadly I don't see them anymore in Thailand. There was book: Khmer Gold: Gifts for the Gods: Emma Bunker and Douglas Lateford,which dated them circa pre 600CE excavated in Banteay Meanchy Cambodia. The Thais love this stuff. Anyway some nice pieces!