Let's establish one thing right up front. The so called "Russian blue" and "Russian Faceted" are nicknames. The Bohemian bead makers made these faceted beads. They grinders made 6-faceted beads, 7-faceted beads and even 10-faceted beads. The seven facted bead was made at least from the early 1700's to the early 1800's. Sometime during the early 1800's the Bohemians switched to making faceted beads with an inner core. This lasted up to 1850. The last of the faceted beads were made about that time. The coastal Indian Peoples from Alaska to the Oregon coast called this bead "Chief" bead. Peter Francis, Jr., in his book "Beads of The World" identifies the blue padre type bead as the "Chief" bead of the Northwest. The coastal Indians of yesteryear and today still call the blue faceted bead "Chief" bead. The lighter blue bead is called "Slave Bead." It was used by the people to buy slaves. The cobalt blue, 7-faceted bead, with no inner core, is still a much coveted bead by the coastal Indian Peoples. Trade with this bead is going on today, but mostly, they want the bead for ceremonial items. John's little sister, honorary, is of the Makah peoples on the Olympic Penninsula. They and other tribal peoples we met along the Washington coast do not recognize the blue padre type bead. I have a blue bead from the Fenstermaker collection. The tag, in Fenstermakers handwriting says "Chief" bead, Washington (state.) Our beads are furnished with a Statement of Provance, a Warranty Statement of Authentication, and a Statement of Authentication.