I have six or eight excellent examples of oxblood which I bought right away when I started collecting. I even have a questionable marble with questionable ox, which is not, right there with them so it is quick to tell the difference. I review them regularly when I look at oxblood, so yes agreed. Euro sparklers with oxblood on the interior is a whole new topic for me here but I have plenty of knowledge that I can apply plus add what is here. A nice adventure! even without aventurine.. ð Thanks!!