Look like glass beads, if you have a loupe (x10) you should be able to see if there are any bubbles (or high resolution image enlarged on computer should do). Oxley is partly industrial area therefore they maybe some type of byproduct. Otherwise, if they are gems it would be very interesting to know what they are. S.G. test or maybe refractive index.
I am a qualified gemologist I could run a few test (for interest sake), so pm me if you get the chance.